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-8x+8(1-7x)=392
We move all terms to the left:
-8x+8(1-7x)-(392)=0
We add all the numbers together, and all the variables
-8x+8(-7x+1)-392=0
We multiply parentheses
-8x-56x+8-392=0
We add all the numbers together, and all the variables
-64x-384=0
We move all terms containing x to the left, all other terms to the right
-64x=384
x=384/-64
x=-6
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