1、(1)X-4=-(3X1)一(85X)=3X(3)(2)3x-1(2-(1)5X-9=-(1-4X)(2).2(2X+1)=3(X+2)(X+5)=§(1X)82(x1)32x一元一次方程計算4+(2X+3)=4X2+2X-3=-(4X-17)(2)3X+2(2X-5)=3X+62(4X+1)-14=12(1)3-(4x-3)=7二28y-(8-2y)=3y+2(4y+7)x+2(4+5X)=X+98(X+6)2x13x+2(1+X)=1114x=4X+3(-7X+10)2(-X+1)=4(X+1)529y2210x1123x2102x4-1.、x-2、15x41-24；2x43&a

2、mp;52y37y2x22x36x7417(23y)5(12yH8(17y)5(z4)7(7z)9"23(9z)53(x+1)3(X1H2X1)21-9IX5-3(x7)224(2x)-H22-32X1s(2x1)+3-&0.50.22Uloboo7o82L0"62x773coX23N)3Xoct1Q2C7、4D2oX3y0000oUiO4Xy23552h-Xo、2y5ZX54JO247yyX12oboX5X33occo、oK)DnX2Z0.2X05003P02Xx5。5。32O25O4XX7joX巨a00X殳5Ok)-kX52o、X200005求200s?g6、J

3、21£_0.40.020.3x0.20.05x0.01o2|XX6、g3IX二、0505O求o00o7Xp、4I»Xo0077X一、si3金2|X二、O1(14)0.1x0.20.050.1x0.4.1.50.2341(15)x4324163x1(16)4x122x31111(17)k3333y222丁2x110x12x1122(x-1)+5(x-1)=1-8(x-1);5(y-1)-3(1-y)+7(1-y)=10067(x1)2(5x+3)=0x-1什26=1尹廿4x+1胃二x一x“x=-+51O.O.V0.6=15"lz1=7x(x2)(x+3)=0(7)3

4、(mn)(4)0.5x57(mn)213=1+5(mn)210(mn)2,則(mn)2的值為,y1+y2=(8)若y-x1,y2=2x+1,且y13y2=0,則x=(9)已知3x2m1y4與一2x4y2n-3是同類項，且Ia2ml+(0.5bn)2=0,貝Um+n+a+b勺值為(10)方程IxI1=73IxI的解是x=;方程Ix+1I=3的解是x=(1)4(x-1)-3(3x+2)=Tn-7(x-1)(2)欲L_=1.(3)U3yn"2x.23x121x工+12.(18)k為何值時,x=5是下面關于x的方程510x13的解?(1)2(3x1)3(6x2)(21x7)(2)12(x1)15(x2)0.4x0.9(3)0.50.030.02x(1)6(2x133x214)2x3(x4)5(2)2x3(x3)3x11(3x1)211(4)220.0332xx8(x4)21(5)一2-x1651)x3x24(2)11-(1x)341/3、3(x4)2x41.88x1.31.223x5x0.40.335x22x132x122x12x13-x11x22mx32x.(m1)xnx.