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初一一元一次方程100道

我没答案,自己辛苦一下吧、7(2x-1)-3(4x-1)=4(3x+2)-1; (5y+1)+ (1-y)= (9y+1)+ (1-3y); 20%+(1-20%)(320-x)=320*40% 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x) x/3 -5 = (5-x)/2 2(x+1) /3=5(x+1) /6 -1 (1/5)x +1 =(2x+1)/4 (5-2)/2 - (4+x)/3 =1 x/3 -1 = (1-x)/2 (x-

题:10 x + 90 = 290 10 x = 290-90x= 200/10x= 20题:10 x + 91 = 291 10 x = 291-91x x = 388-98x= 290/10x= 29题:10 x + 99 = 389 10 x = 389-99x= 290/10x= 29题:11 x

1.(x-1.5-1)/4=(x-1.5+1)/5 5(x-2.5)=4(x-0.5) x=-2+12.5 x=10.5 2.l+300=30v 300-l=10v v= 107.5x+15-2x-2=10,3x=-3,x=-1 108.[73X+78(100-X)]除以100=75.4 解:方程两边同乘

7(2x-1)-3(4x-1)=4(3x+2)-1; (5y+1)+ (1-y)= (9y+1)+ (1-3y); 20%+(1-20%)(320-x)=320* x/3 -1 = (1-x)/2 (x-2)/2 - (3x-2)/4 =-1 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(

2(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/2[2/3(1/4x-1)-2]-x=2 2(x-2)+2=x+1 5x^2+3x+1=0 7x^2+x+12=0 2x^2+4x+4=0 8x^2+3x+1=0 5x^2+3x+2=0 45x^2+3x+100=0 89x^2+335x+1=0 x+1=3 2x+3=5 3x+5=8

3X+5X=48 X=614X-8X=12 X=2 6*5+2X=44 X=720X-50=50 X=5 28+6X=88 X=1032-22X=10 X=1 4y+2=6 Y=1 x+32=76 X=443x+6=18 X=416+8x=40 X=32x-8=8 X=84x-3*9=29 X=98x-3x=105 X=21 x-6*5=42 X=72 x+5=7 X=22x+3=10 X=7/212x-9

1.3/4-x=4/3 2.3x-2=5x+4 3.5x-7=8 4.1/3x+4=75.3x-1/2=3/2x+26.4x-5x+3=5-7x7.2x-1=3x-18.1/2a+3=4a-49.2(2x+1)-10x-1=610.5(x+2)=2(5x-1)抱歉,我也是个学生,没时间打那么多道

1/2+1/6+1/12+x+1/30=1-1/30(要用简便算法巧算的)(答案:1/20) 0.6x+x/10-0.2=6/5(答案:2) 2-(3x/8+1/6÷1/3)=35/24(答案:1/9) 3.5/105=x/33(答案:1.1) 7.5:x=24:12(答案:3.75)这样的行吗?小学六年级的 1/3:x=5:6(答案:0.4)

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