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1、2x+l=75x-2=83x+3=2x+7 x+5=3 工一71 lx-2=4x-9x-9=4x+27丄x=丄卄342x=lx+622x+6=l1 Ox3=95x2=7x+8-x=3x-2 24x2=3x7x+2=2x4X= x+152x-l=-+2334 (x+0.5) +x=72 (x1) =45 (x1) =12- (1-x) =-21 lx+l=5(2x+l)4x-3(20-x) =35 (x+8) -5=02(3-x) =9-3(x+3) =24-2(x-2) =12 12(2一3x)二Lr+42 76-3(x+-)=-3 32(200-15%) =70+25兀3(2x+l) =12
2、x+2 x543 x x+4hx+1) =l(2x-3)3 7-(x+1) =-(x1)4 32x1x+2=13436373839404142434445464748495051525354一0056i(x-l) =2丄(x+2)2 5丄(卄14) =l(x+20)74丄(x+15) =l-l(x-7)52 31 1 3x=4 2 47x-5 _ 382x 5x+l-6丄口2 6ix- i(3-2x) =15 22x+l 5x1(=136丄(2x+14) =4-2x73 29(2004x) (300x) =300x 1010258(3x-l) -9(5x-l 1) -2(2x-7) =301,
3、1 11一卄一 = -X23 450.5al_0.1x+2_i0.20.3x 1x+2oT rr=i22x + I = x + 420.8x 0.1 = 0.5x 0.71x_4=2x+3-|x3x +17 + x6x-l 2x + 3 x + 11 =+463沪 + 1) + 2J 冬2 3 23233231.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.57丄(2x + 3) + 1(2x + 4) = 1(2x + 5) + 1(2x + 6)23
4、455.y+2=7a87(2x 一 1) 一 3(4% 一 1) + 2(3兀 一 2)+1 = 05.r-l76 =3Z(2y-l)+l(l-2y)=|(2y-l)2x-l x + 216需(21)一2卜=2X1282.83.84.85.9X7l533x=2x+52y+3=y-l7y=4 3y2 _1-y=-53+ 4) + 6 + 8 = 186. 10x+7=12x53x87. 8x-4+2x二 4x 388. 2(3x+4)=6-5(x-7)89.90.x 2x-4. 5x+12=1 23658.59.60.61.62.63.64.65.66.67.68.69.70.71.72.73.
5、74.75.76.77.7&79.80.292.-x-l)-8 = -x+l4 3 2425127x 12(-x-) = 8 -(6x- 9)323x_2-18x = x + 269x-2 x + 34 + x (x 5) +(x + l)x30% + (100-x)x25% = lx93.2 一 3x 5 + x40.50.20.1111 )+ 3+ 54_32丿94.1-x x+295.0.32 (2x-l) -4 (4x-l) -5 (2x+l)-19=00.4y + 0.9 y 5 0.3 + 0.2y 053x l . 3x + 5 jv-4 - 11 = 2 34620.4X +
6、0.9 0.1a0.505020.03 + 002x0X)396.1 13(x+2)- (2x-3)=2(2x-3)-7(x+2)|l|(lx+l) + 2J-2i = |97.1111亍亍三(x-2)-2-2=0234(5x-l)-8-20-7=l98.5(y+8)-5=4(2y-7)99.2-5+3)二9 2(x+3)-2(x+l)-5=0 2(x + 3)让 x+ 2 x 23x 一= 16 一326x-3x+4=1.60.150.22 3“ 3 x、 2-3x3 236j 00 1.8 8a 1.3 3x 5 a 0.41.2203答案1.2.x=3x=235.2x567.8A=-93
7、.x=436.x=368.3 A =-4.x=637.x 二-2855.7x=38.5x=69.22530 506x =3163576.39.X=570.16x=-1240.13x=V=257.x=41471.x=88.x 二-3241.x 二T72.x 二T9.5 .V=7-42.20x73.x 二-32374.x=910.6 Y=-543.25 x=1275.18X=T11.x=-544.x=-376.X=112.1x=一45.7x=-77.X 二-803878.3x 二一一13.X=146.a=216214.2X =47.x=379.52348.329A=15.5x=-1580.349.
8、6481.X=1-v=16.X=11382.x=517.X=150.2983.y= 4.v= 18.x 二T2284.y=-651.x =2519.x=-552.x =-285.5y=-20.x=-353.x =7621.x=454.x =186.x=1222.x=955.x =-587.1x二一23.x 二-71656.x =3-24.3388.x=3X2289.757.x=x=-25.x 二-117226.x=-4190.1758.xx=27.1x=26259.x=591.2_r =28.10x=60.7x =59892.x 二629.x=661.x=393.x 二-230.3 x=-262.294.2兀=一一731.x=863.x=095.y 二932.164.x=696.x=12x=-5697.x=18665.A =33.x二-16798.y=2134.x=766.x = -l -99.X=142lf101.