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)
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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)](/uploads/image/z/339196-4-6.jpg?t=%E4%B8%83%E5%B9%B4%E7%BA%A7%E4%B8%8A%E5%86%8C%E6%95%B0%E5%AD%A6%E8%A7%A3%E6%96%B9%E7%A8%8B3%EF%BC%88y%2B1%29+++++2%28x-2%29-3%283x%2B2%29%3Dx%2B6+++++++++++3%28x-7%29-2%5B9-4%282-x%29%5D%3D22+++++++x-1%2F3%5Bx-1%2F3%28x-9%29%5D%3D1%2F9%28x-9%293%EF%BC%88y%2B1%29%3D%282y-1%29++++++2x-5%3D7++++14x-3%2820-x%29%3D5x-3%288-x%29)
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)
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)
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
3(y+1) 少了东西吧。
X=-2
X=-9
X=0