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-4(-8x+7)+4=-280
We move all terms to the left:
-4(-8x+7)+4-(-280)=0
We add all the numbers together, and all the variables
-4(-8x+7)+284=0
We multiply parentheses
32x-28+284=0
We add all the numbers together, and all the variables
32x+256=0
We move all terms containing x to the left, all other terms to the right
32x=-256
x=-256/32
x=-8
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