Question

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-

Answer 1

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