(702)去分母解一元一次方程專項(xiàng)練習(xí)247題(有答案)32頁-

1、(702)去分母解一元一次方程專項(xiàng)練習(xí)247題(有答案)32頁-ok解一元一次方程專項(xiàng)練習(xí)247題（有答案）5.21052.X-1-2«-12；6.X一十=2一弩0.2k0.13.2=，7.4.0.30.78.3第-15M-7：_1=：-9.14.0.30-210.2(k+1)_53)15.一號(hào)=111.6x=.+1;16.芽卓等12.y-(y-1)=1(yT);172一空u=一彳.13.米即ix-出-8=停x+1；18.2x+l_d_2-1_10k+141312,19.20.25.口一三336一221.26.22.2k-13k-L-27.k3k+11x-1s-r-1-23.0,lx

2、-Op2x+10.020.528.2二x?29.02-1=0.030.434.2k-1330.1。肝11235.31.%(x1)=2-三(x+2).36.0.Ik_0.2_K+1-oTozoTb32.002K_0.10x+O.181.F-3x0.0310.12237.33.(X1冗一0.2_x+l-0.02-0?5=338.6(2-9(,5G二239.44.C-D40.：一:一.23645.弓(x-1)(3x+2)就41.42.x43.-三(xT).d46.47.48.k4-4_x-30720.?53.宜-咨二1249i=2-K.54.電q-i-50.75%(x1)25%(x4)=25%(x+

3、6)55.51.56.52.-(3x-6)-(2k-4)=4J匕57.58.HO.40.263.0.4耳+0,8_0.4Ht+U.M_l1-0.6-OTOS-"359.2xY(x3)部-I(3x+1).64.-1241.81260.65.T=i321261.0.50.4k-0.6-67266.=一.：0.30.02162.x+警=1-與67.1-三口72.2x一壽十等68.二y-+-：-773 .寰-白jJ674 .廓目(比1)2x=2.I1.70. 37'71. 3(x+2)-2(x-1)=5一4x.76.:二匚一用82.-：口乙上83.2(#1)-3Cx-)=1-上1-?

4、79 -I - 一 匚 y 二%乙乙1-?84.7x-1_1-0.2x_5x+l0.024=0.018-0.01280.?85.3x_2.5_1-32衛(wèi)乂工0.520.481.融T_效+2=586.2-0.EsL5=10.02工一Q.06riz-87.2(33)=092.工-5+188.0.5x+0.9x-50.01+0.02工0.50.0393.3k_1-4-x_oTs0：4F89.Sk+2,7l32(x-2)1=-d1594.90.95.91.工-1(x-1)=-G-1)96.97.4工-1,5_5芯-0.22-e0.5-0.20.198.2工+4_4x-3_l.32-4?102.103.

5、99.|得(x1)3=2x5;100.5-0.2- 0.05 ,104.悔-§z=-Jx+l105.-5 1-2工0, 4 - 0, 05106.101.70%x+30x)X55%=30X65%107.=1.5.2k-1T111.2吟l&T)MrJJ乙T0.-0,1_0,5x+0.1112.0.20.6二1；108.23%)j竺里o.010.039.5113.乳（2x+2）-加嗝109.3(x+1)-2(l1)=4(弟-1)-(x+1)114.0,8-9x1,3_3x5x+lL20.20.3110.115.1,2-2x1,5-2,3甚一510,20.5116.0,2-m1-1

6、-3寶1.5=0.3Z5121.0.30.2117.多7,122.。.山+0,09_&3Ho.2q：0.050.32?118.吉-1）-3（晟忌）二匕l(fā)J乙123.(5x2)X30%=7x+8)X20%119.124.120.3k-1.1_4x-0,2_016-0.7x0.40,3=0?06-125.“/i人中號(hào)-i；J乙130. 234(5x1)8126.三二 33；-20 7=1;127.131. (-x-13-61+41=1；128.V129.0.3虧0.2132.x2x3(x+4)5=32xx8(x一2;)133.1.81,3-3x5k-0.41.2137.4黑心-D-小4=1

7、134.138.135.0.4k+0,9_K一50,02h+0,03-r520.03139.：x=（x上）136.140.Q,4升0,9_60X0.02x_m-50.5-07032141.0.lx-U.2_k+1-oToZ-0?05=3.142.x-分=2一管;x+1143.il=hi0/S20.1148.告+3)4-31+3-3=0144.6fF149.145.k+1.0.2k-1o72-ai-=1150.二，二：.1-2k3k4+2.151-9)152.153.154.x即x-l(x-9)尸卷(x155.於+15K-2丁丁口.Q-1)二口-1q6k-0.60.2Hl0.4K0.6,156.

8、157.Q.5.3)-二1158.5-K3-x=2.159.6(-x-4)4-2k=7-(-1)160.1-2y3y+237165.161二(5舟=4(6lJ)TG+4).166.-5)jLSo26510J162.167. 2k - -1 (x+3) = _ x-l-3 .3廠 1_5y - 7163.-1 ,168.x _2、Cl 5+2h02 - -0.30.6 164.月隹儲(chǔ)-1)-3f=3.169.J巴乙JJ170.X-2x+1175.2x+l,T=1-171.1一.176.3lL42x-381.5x0.50.2-0.1172.=23+2.177.5x-7-6-=1,173.0.1-0

9、.2h_0.07-0.lx-oTso7o41178.芯-L5T16.174.l+3x3=1x+4179.2x+l_._L0x+lrr180.q一共=(x1)一二185.113j_.2二181.1；=00.20.57工-1_1_2肝。186.-182.12x-102工-9_2-8/92142015+14,187.x-1Tz"S5183.0.4xW-2_2x-2._50.20.57184.普z+g|z條y3189.0.lx-0.2-0702-二3190.195.2x-12K+56l72-3-=191.196.2l13+2_192.工營1)+197.Q7+3篡_0,弘二1(18CL4193

10、.-12x_1_d_vdno2k+3x-7-+=1x198194.212199.綽-")*】200.4x+3(0.2-2x)帶6x)2x;205.I-0.60：4+x=LlxH.0.3201.-2+2x=3.W(2t一5)一,(2t-4)=4.202.207.2-3x1F208.g(x2)+2x=(7-5x);=3-10209.0.7x+0.5(30-x)=30X0.6.214.210.,5工CL?=5.215.3x+211.2k1_31+1216.2x+l5K-24-=2-212.0.20.5217.1*7片-(且x2)二1L233,218.=1-r-£,aJ219.1.

11、8-8k_LI仝：一0.41.220.32工1.6-3x_317+8224.220.225.(1-2x)=(3x+1)221.二二：226.222.上一1'=10.70.03227.什1門一般_xT2i-36.228.i+1233.229.1-2x_3x+l234.=一6x=-表+1230.二一包二1一%263235.NT(k-i)="-i).乙占Q231.21Y(x誓)=31三（2x-9）.236.4(x-15=1-ts+2)25232.必Nix+5)-4+3=1237.寧差2kTlOx-12x+l36-243.325244.239.4(-4s)-3(k+1)=2。.3x+

12、l_73乂-2_2五+3245.：.241.-6246.247."7一")4第28頁共43頁移項(xiàng)、合并同類項(xiàng)，得15x=-122,解一元一次方程247題參考答案:得x=1.去分母得：3(2x)18=2x(2x+3)去括號(hào)得：63x18=3,移項(xiàng)合并得:3x=9,-x=-32.去分母得，3(xT)=4(2x1)24,10.去分母得:4(x+1)去括號(hào)得：移項(xiàng)、合并得：系數(shù)化為1得:11.15=5(x+1)6,4x+4=5x+56,x=5移項(xiàng)，合并得上x二去括號(hào)得，3x3=8x424,移項(xiàng)、合并同類項(xiàng)得，5x=25,系數(shù)化為1得，x=5;|9v-1-103.原方程變形為：二,2

13、43,3 4|去分母得，4(2x1)24=3(10x10),去括號(hào)得，8x424=30x30,移項(xiàng)、合并同類項(xiàng)得，22x=2,系數(shù)化為1得，x=-L114 .去分母得，7(1.7-2x)=3x2.1去括號(hào)，11.914x=3x2.1移項(xiàng)合并同類項(xiàng)得，-17x=14系數(shù)化為1得，x=.175 .原方程變形成5(3x+1)20=3x22(2x+3)15x15=x816x=776 .去分母得：6x3(x-1)=122(x+2)去括號(hào)得：6x3x+3=122x4移項(xiàng)彳#:6x3x+2x=1243合并彳導(dǎo):5x=5系數(shù)化為1得：x=1.7 .去分母得：5(4-x)=3(x-3)15,化簡可得：2x=11

14、,系數(shù)化1得：x=皂28 .原式可變形為：3(3y-1)12=2(5y7)去括號(hào)得：9y312=10y14移項(xiàng)得：9y10y=14+12+3合并得：-y=1系數(shù)化1得：y=112.13.2去分母，得6y3去括號(hào)，得6y移項(xiàng)，合并得去括號(hào)，得(315(y1)=4(y1),3y+3=4y4,y=7x-1)46=<x+1,214.去分母，得2去括號(hào)，得移項(xiàng)，合并得10x)6=3(1+10x),20x6=3+30x,化系數(shù)為1,得x=x=.15.去分母得:3(x7)+4(5x6)=12,去括號(hào)得:3x21+20x24=12,移項(xiàng)得3x+6x=12+21+24,合并同類項(xiàng)得：9x=57,化系數(shù)為1

15、得：x=xIs|16.去分母：6(x3)+4(6x)=12+3(1+2x),去括號(hào)：6x一18+244x=12+3+6x,50x=5,移項(xiàng)：6x4x6x=12+3+1824,化簡：-4x=9,化系數(shù)為1:x=.49 .原方程分母化整得：10 (肝G_10(X-3)2"5=1'B去分母，得5(x+4)2(x3)=1.6,去括號(hào)，得5x+202x+6=1.6,17 .去分母得：12-2(2x-4)=(x-7),去括號(hào)得：12-4x+8=-x+7,移項(xiàng)得：-4x+x=7-20,合并得：-3x=-13,系數(shù)化為1得：x=考.18 .去分母得：3(2x+1)12=4(2x1)(10x+

16、1),去括號(hào)得：6x+312=8x410x1,移項(xiàng)合并同類項(xiàng)得：8x=4,系數(shù)化為得：x=-219 .去分母得：去括號(hào)得:移項(xiàng)得:系數(shù)化為20 .去分母得：去括號(hào)得:2(5x7)+12=3(3x1)10x14+12=9x3得:10x9x=3+1412x=3(3x+4)2(6x1)=69x+1212x+2=6移項(xiàng)、合并同類項(xiàng)得:系數(shù)化為得:x=去括號(hào)得：2x3x1=63x+3,移項(xiàng)、合并同類項(xiàng)得:系數(shù)化為1得：2x=10,x=528.12(x+5)=6x2(x1)12x5=6x-2x+2x6x+2x=212+55x=5x=121.去分母得:36(x+4)30x+150=10(x+3)15(x29

17、.10-20xr7-10s2)去括號(hào)得：i移項(xiàng)、合并得:化系數(shù)為1得:22.去分母得：去括號(hào)得：移項(xiàng)合并得：化系數(shù)為1得：4(1020x)12=3(710x)23.24.25.6x+2430x+150=10x+3015x+304080x12=2130xx=619x=11480x+30x=2140+1250x=7(2x1)3(3x1)=24,8xx=49x+3=24,-x=25,25原方程可以變形為：5x102(x+1)=35x102x2=33x=15x=5原方程可以變形為x-=(x-lx+)-=x+N(x2ix+.x12)182=，'=x+=4'229x=12(2x1)(5x)

18、=3(x+3)2x=10x=526.去括號(hào)得：-x28=-'x8x,2移項(xiàng)、合并同類項(xiàng)得:x=8系數(shù)化為1得:x=8127.去分母得：2x-(3x+1)=63(x1),30.去分母得：3(2x+1)去括號(hào)得：合并得：化系數(shù)為31.去分母得：5去括號(hào)得：移項(xiàng)合并得：系數(shù)化為1得:32.原方程可化為:12=12x(10x+1),6x9=2x1,4x=8,1得：x=2(x1)=202(x+2),5x5=202x4,去分母得:去括號(hào)得:移項(xiàng)、合并得:系數(shù)化為1得:33.原方程變形為:34.去分母得：去括號(hào)得:移項(xiàng)得:5x系數(shù)化為1得:35.方程兩邊同乘5x+20=15,36.方程兩邊同乘7x=

19、21,x=318-18k15-30x2040x+60=5(1818x)3(1530x),40x+60=9090x45+90x,40x=15,x=50(0.1x0.2)2(x+1)=3,102x2=3,3x=15x=5(2x1)=63x4x2=63x4x+3x=8x=15,得3(x3)5(x4)=15,整理，得解得x=3x1,得50(0.1x0.2)2(x+1)=3,整理，得解得:5x3x=15102x2=3,37.去分母得:去括號(hào)得:移項(xiàng)合并得:系數(shù)化為1得:5y=15,y=3 .合并同類項(xiàng)得:5y= 8,40.43.3x=9, x= - 33x(x+1) (x+6)(x+1) (x1) =6

20、23x 3x 2x 14x 12 x +1=617x=17得：x= 141.原式通分得:整理得:將其變形得:6 x+3=6,=142.原式變形為：x+3=移項(xiàng)合并同類項(xiàng)得,17x=65 ,系數(shù)化為1 得，x=5517'44.解:去括號(hào)得,2x 一1 24=3x去分母得,24x 6x+3x 3=8x 8,系數(shù)化為1得,x=51345.去分母得:x=53y18=5+2(1y),3y18=5+22y,38.&(2-V)(lCH15y)=23u解：去括號(hào)得：12-2y-2-3y=2,移項(xiàng)得：-2y3y=212+2,系數(shù)化為1得：乃£.v539.解：去分母得：3(2-x)18=

21、2x(2x+3),去括號(hào)得：63x18=2x2x3,移項(xiàng)得：3x2x+2x=36+18(或3x=36+18)合并同類項(xiàng)得：系數(shù)化為1得:去分母得：(x-1)-去括號(hào)得：合并得：-化系數(shù)為1-16=I將其通分并整理得：10x25+3x6=15x+45,即2x=76,.x=38解：去分母得，3(x-7)-4(5x+8)=12,去括號(hào)得，3x2120x32=12,移項(xiàng)合并同類項(xiàng)得，13x=-5,15(x1)8(3x+2)=230(x1)21x=63,x=346 .去括號(hào)，得a2a=2,33去分母，得a463a=6,移項(xiàng)，合并得-2a=16,化系數(shù)為1,得a=8；47 .去分母，得5(x3)2(4x+

22、1)=10,去括號(hào)，得5x158x2=10,移項(xiàng)、合并得-3x=27,化系數(shù)為1,得x=9;48 .把分母化為整數(shù)，得口吐理-弛二現(xiàn)=2,25去分母，得5(10x+40)2(10x30)=20,去括號(hào)，得50x+20020x+60=20,移項(xiàng)、合并得30x=240,化系數(shù)為1,得x=849 .工+1="一.23解：去分母，得3x+6=2(2-x);去括號(hào)，得3x+6=4-2x移項(xiàng)，得3x+2x=46合并同類項(xiàng)，得5x=2系數(shù)化成1,得x=;550 .75%(x1)25%(x4)=25%(x+6)解：將原方程等價(jià)為：0.75(x-1)0.25(x-4)=0.25(x+6)去括號(hào)，得0.

23、75x0.750.25x+1=0.25x+1.5移項(xiàng)，得0.75x0.25x0.25x=1.51+0.75合并同類項(xiàng)，得0.25x=1.25系數(shù)化成1,得x=551 .去分母得：5(x3)-2(4x+1)=10,去括號(hào)得：5x158x2=10,移項(xiàng)、合并得：-3x=27,系數(shù)化為1得：x=9.52 .去括號(hào)得：2x4x+2=4,移項(xiàng)、合并得：x=6.53 .去分母得：12x(2x+1)=123(3x2),去括號(hào)得：12x2x1=129x+6,移項(xiàng)、合并得：19x=19,系數(shù)化為1得：x=154 .去括號(hào)得：Ax13x=2,4移項(xiàng)，合并同類項(xiàng)得：-gx=6,4系數(shù)化為1得：x=8.55去分母得：

24、18x+3(x1)=182(2x1),去括號(hào)得：18x+3x3=184x+2,移項(xiàng)，合并得：25x=23,系數(shù)化為1得：x=3.2556.去分母得：3x72(5x+8)=4,去括號(hào)得：3x710x16=4,移項(xiàng)、合并得：-7x=27,64.原方程可化為:去分母得：3(7x1)=4(12x)6(5x+1)去括號(hào)得：21x3=48x30x6移項(xiàng)合并同類項(xiàng)得：59x=161.0. 5系數(shù)化為1得：x=-21.757.去分母得：3(3x+5)=2(2x-1),去括號(hào)得：9x+15=4x-2,移項(xiàng)合并得：5x=17,系數(shù)化為1得、一175'58.去分母得:(5x+2)2(x-3)=2,去括號(hào)得：

25、5x2x=6+22,移項(xiàng)合并得：3x=6,系數(shù)化為1得:x=259.去小括號(hào)得:2x.x+2=ix艮a22去中括號(hào)得：2x-±x+2=-lx.x-xR3326去分母得：12x4x+12=2x3x1,移項(xiàng)、合并得：9x=13,系數(shù)化為1得：x=-1步g60.工-15)=_1_(x+7)53去分母得3(x15)=155(x+7),3x45=155x35,方程變形為：'r1'V-5二去分母得20x20x+30=2x+6,x=1262.去分母得：15x+5(x+2)=153(x6)去括號(hào)得：15x+5x+10=153x+18移項(xiàng)彳#:15x+5x+3x=15+1810合并彳導(dǎo)

26、:23x=23系數(shù)化為1得：x=163.原方程可化為:去分母得：4x+82(3x+4)=2(x-1),去括號(hào)得：4x+86x8=2x2,移項(xiàng)合并同類項(xiàng)得：-4x=2,系數(shù)化為1得：x=2系數(shù)化為1得：x=L的65 .去分母得：4(3x-2)6=7x4.去括號(hào)得：12x-8-6=7x4.移項(xiàng)、合并同類項(xiàng)得：5x=10.系數(shù)化為1得：x=2.66 .原方程可以化為：士工+1|3|2I去分母得：2(2x-1)=3(x+2)+6去括號(hào)得：4x2=3x+6+6即x=1467去分母得：4(2x-1)3(2x-3)=12,整理得：2x7=0,解得：x=3.5.68 .去括號(hào),n+3"3，2G+1)

27、+3=4,x+1=2,解得：x=169 .去分母得：6(4x+9)15(x5)=30+20x去括號(hào)得：24x+5415x+75=30+20x移項(xiàng)，合并同類項(xiàng)得：-11x=99化系數(shù)為1得：x=970 .去分母得：7(5-7x)=8(5x-2),去括號(hào)得：3549x=40x16,移項(xiàng)合并同類項(xiàng)得，-89x=51,系數(shù)化為得：x=江；8971 .去括號(hào)得：3x+62x+3=54x,移項(xiàng)合并同類項(xiàng)得：5x=4,系數(shù)化為得：x=叵72.去分母得：12x2(5x2)=243(3x+1),去括號(hào)得：12x10x+4=249x3,移項(xiàng)、合并得：11x=17,系數(shù)化為1得：x*.73.去分母得：6x2(1x)

28、=(x+2)6,去括號(hào)得：6x2+2x=x+26,移項(xiàng)彳5:6x+2x-x=2-6+2,合并同類項(xiàng)得：7x=-2,系數(shù)化為得：x=774 .去中括號(hào)得：(M-1)3x=2,回去括號(hào)、移項(xiàng)、合并得：-芻=6,回系數(shù)化為1得：x=875 .去分母得：(2x+5)24=3(3x-2),去括號(hào)得：8x+2024=9x6,移項(xiàng)得：8x9x=620+24,合并同類項(xiàng)得：-x=2,系數(shù)化為1得：x=2.76 .去括號(hào)得：-Xx+X+A+.I=16464328去分母得：x+1+6+56=64移項(xiàng)得：x=177 .去分母得：3(x-7)=12(x-10),去括號(hào)得：3x+7=12x120,移項(xiàng)、合并得：-13x

29、=130,系數(shù)化為1得：x=1078 .去分母得：8(7+3x)=2(3x10)8x去括號(hào)得：873x=6x208x移項(xiàng)合并得：-x=-21系數(shù)化為1得：x=2179 .去括號(hào)，得3(x-+1=5x,233x*+1=5x,26x3+2=10x,移項(xiàng)、合并同類項(xiàng)得：-4x=1,系數(shù)化為1得：x=-148x412=15x97x=7x=-1;3k-1_效+21.丁丁一15(3x1)=2(4x+2)1015x5=8x+410x242x=3,移項(xiàng)合并同類項(xiàng)得，-x=9,系數(shù)化為得，x=983 .去括號(hào)得：x23x+1=1x,解得：x=2.84 .原方程可化為：1=1一02芯旦,241812去分母得：3(

30、7x1)=4(10.2x)6(5x+1),去括號(hào)得：21x1=40.8x30x6,移項(xiàng)、合并同類項(xiàng)得：51.8x=1,系數(shù)化為1得：x二士85 .原方程化為：1宜;：丁=艮二七,整理得：12x=6,解得：x=-恒oc百f卡2-0.SiCL02x-0.0686 .原式變形為：+1.5D.124-X2x-把小數(shù)化為分?jǐn)?shù)、整理得：312去分母得：4(4-x)=12(2x-6),去括號(hào)得164x=122x+6,移項(xiàng)、合并得：-2x=2,系數(shù)化為1得：x=187.去大括號(hào)，得：-1-1(ly-3)=0,去中括號(hào)得：_3)=0,去小括號(hào)得：-ly-3=0,移項(xiàng)得：y=3,2系數(shù)化1得：y=6oo0.5寅+

31、09,R-50.01+0.02j880.530.03聲七產(chǎn)5H9h-5l+2x八原萬程化為：q=(1分)3去分母得：3(5x+9)+5(x-5)=5(1+2x)化簡彳導(dǎo):10x=3解得：107x=182.去括號(hào)得，2(座-1)42x=3,289.去分母得：5(3x+2)15=3(7x3)+2(x去括號(hào)得：15x+1015=21x9+2x4移項(xiàng)合并得：-8x=8系數(shù)化為1得：x=190.去分母得：2(2x-5)+3(3-x)=12,2)去括號(hào)得：4x移項(xiàng)、合并得：10+93x=12,x=13去小括號(hào)得：x12=2x-5,移項(xiàng)、合并同類項(xiàng)得：x=291.解:K-4-2.5二0.20.05L_11_

32、2_2鏟FN-3”父y-4一中分子，分母都乘以5得:5x-20,0.26x3x+3=8x8,6x3x8x=83,上二9中的分子、11L92.解：3(2x1)=4(x5)+12,6x3=4x20+12,d05即原方程可化為：移項(xiàng)得:合并同類項(xiàng)得：-分母都乘以20得：20x-605x202.5=20x60.5x20x=60+20+2.5,15x=37.5,6x4x=20+12+3,化系數(shù)為1得：x=2.5101.去括號(hào)得：70%x+16.555%x=19.5.移項(xiàng)彳#:70%x55%x=19.516.5.合并同類項(xiàng)得：系數(shù)化為1得:102.去分母得:0.15x=3.x=202(x+3)(23x)=

33、48x93.3x0.5去分母得：去括號(hào)得：1,4-x1=10.414X3x5(1.4x)=212x7+5x=0.2去括號(hào)得：2x+62+3x=48x移項(xiàng)合并得：13x=0化系數(shù)為1得：x=0103.原方程變形為：3x+9=6xx+1移項(xiàng)、合并得:17x=93x5x=19系數(shù)化為1,得x=9IT94.去分母得:2(3x2)+10=5(x+3),去括號(hào)得：6x4+10=5x+15,移項(xiàng)、合并同類項(xiàng)得：6x5x=156,化系數(shù)為1得：x=995.去分母，得3(x3)4(5x4)=18去括號(hào)，得3x920x+16=18,移項(xiàng)、合并同類項(xiàng)，得-17x=11,系數(shù)化為1,得x=-11irx=4;=2010

34、4.105.去分母得：9.6(10x50)=80160x40x96 .去分母，得3(x+1)12=2(2x-1),去括號(hào)，得3x+312=4x2,移項(xiàng)、合并同類項(xiàng)，得-x=7,系數(shù)化為1,得x=-797 .原方程可化為：(8x-3)(25x4)=1210x去括號(hào)得：8x325x+4=1210x,去括號(hào)得：9.6移項(xiàng)、合并得：10x+50=80160x150x=20.4化系數(shù)為1,得x=0.136106.去括號(hào)得：2-3x-xIs移項(xiàng)、合并同類項(xiàng)得:2x-7x=11,2,系數(shù)化為1得：x=11-2x=一1598.去分母得：4(2x+4)6(4x3)=3去括號(hào)得：8x+1624x+18=3,x=8

35、15移項(xiàng)，合并同類項(xiàng)得:16x=31,107.原方程變形為：6x32(25x)=9,系數(shù)化為1得:31x=;1&16x=16x=199.去中括號(hào)得：(x-1)2=2x5,108.原方程變形為：200(2-3y)4.5=3-30Qy116.原方程可化為:.400600y4.5=1100y9.5500y=404.V=1C1-y=125109 .去分母得：18(x+1)2(x1)=24(x1)21(x+1),去括號(hào)得：18x+182x+2=24x2421x21,移項(xiàng)、合并同類項(xiàng)得：13x=-65,系數(shù)化為1得：x=5110 .去分母得：3(3x1)+18=15x,去括號(hào)得：9x3+18=15

36、x,移項(xiàng)、合并得：14x=14,系數(shù)化為1得：x=1;111 .去括號(hào)得：AJx+1=2x,334移項(xiàng)、合并同類項(xiàng)得：x=1,12系數(shù)化為1得：x=1.7112 .原方程可化為：1=1,0.60.61.-0.3-0.5k-0.1=1,去分母得：10(210x)45=12(13x)去括號(hào)得：20100x45=1236x移項(xiàng)、合并同類項(xiàng)得:系數(shù)化為1得：x3764117.77z+18=14z45,64x=3777z14z=4518,63z=63,z=118.119.-1;(2x1)3(4x+3)=3x,6x12x9=3x,9x=12,3x2+10=x+6,2x=x=原方程變形為30x-ll40k-

37、216-70k去分母，得3X(30x11)-4X(40x2)=2X(1670x),去括號(hào)，得90x33160x+8=32140x,移項(xiàng)，得90x160x+140x=32+338,合并同類項(xiàng)，得70x=57,x0.4=0.6,x=1；系數(shù)化為1,得5T工二-70113.原方程可化為：(2x+2)31dx=1,22(2x+2)3x=6,4x一3x=64,121.分母化整得:50k-1030k-12=1去分母得:去括號(hào)得:2(50x10)3(30x12)=6100x2090x+36=6x=2-0.L3-3工5jc+1114.-=,1.20.20.3口并曰8-90s13-30k50x+10|1223去

38、分母得：890x6(1330x)=4(50x+10),去括號(hào)、合并同類項(xiàng)得：110x=110,系數(shù)化為1得：x=1-51115.原方程可化為：610x3+5x1q小去分母，得2440x12+20x(3x5)=2去括號(hào)，得2440x12+20x3x+5=2移項(xiàng)、合并同類項(xiàng)，得-23x=15系數(shù)化為1,得x=2823移項(xiàng)、合并同類項(xiàng)得：10x=-10系數(shù)化1得：x=1122.原式變形為:56(4x+9)10(3x+2)=1524x+5430x20=15x7521x=109,x=12?x21123.原式變形為:15x124.去分母得，20去括號(hào)得20x60移項(xiàng)合并得，-系數(shù)化為1得,32(x5)3(

39、5x2)=2(7x+8)6=14x+16x=22(x3)50(x+4)=16,50x200=1630x=276,x=9.2125.2(x+1)+?=_!JE132去分母得：12(x+1)+2(x-3)=21x6,去括號(hào)得：12x+12+2x6=21x6,移項(xiàng)彳#:12x+2x21x=6+612合并同類項(xiàng)得：-7x=-12兩邊同除以-7得：x=空；7126.*=334去分母得：4(1-x)=363(x+2),去括號(hào)得：44x=363x6,移項(xiàng)得：-4x+3x=3664,合并同類項(xiàng)得：-x=26,兩邊同除以-1得：x=26127.去分母得：3(4-x)2(2x+1)=6去括號(hào)、移項(xiàng)合并得：-7x=4系數(shù)化為1得：x=金；128.去分母得：10x5(x1)=202(x+2)去括號(hào)得：5x+5=162x移項(xiàng)合并得：7x=11系數(shù)化為1得：x=Ai7129.左右兩邊同乘6得:40x+16=4290x,22x=132,x=6;133.先把系數(shù)化為整數(shù)，得IS-0013-30t50s-41220再去分母，兩邊都乘以60,得5(18-80x)3(13-3x)20(50x4)=0,去