七年级上册数学解方程3（y+1) 2(x-2)-3(3x+2)=x+6 3(x-7)-2[9-4(2-x)]=22 x-

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七年级上册数学解方程
3（y+1) 2(x-2)-3(3x+2)=x+6 3(x-7)-2[9-4(2-x)]=22 x-1/3[x-1/3(x-9)]=1/9(x-9)
3（y+1)=(2y-1) 2x-5=7 14x-3(20-x)=5x-3(8-x)

2(x-2)-3(3x+2)=x+6 3(x-7)-2[9-4(2-x)]=22
2x-4-9x-6=x+6 3x-21-2(9-8+4x)=22
8x=-16 3x-21-2-8x=22
x=-2 5x=-45
x=-9
x-1/3[x-1/3(x-9)]=1/9(x-9)
x-1/3(x-1/3x+3)=1/9x-1
x-2/9x-1=1/9x-1
2/3x=0
x=0

七年级上册数学解方程3（y+1) 2(x-2)-3(3x+2)=x+6 3(x-7)-2[9-4(2-x)]=22 x- 解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8) 解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7) 解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7) 解方程：x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6 解方程】(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程：（x-8）/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 解方程：(x-2)(x^2-6x-9)=x(x-5)(x-3)