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-4x+4=-3(4x+20)
We move all terms to the left:
-4x+4-(-3(4x+20))=0
We calculate terms in parentheses: -(-3(4x+20)), so:We get rid of parentheses
-3(4x+20)
We multiply parentheses
-12x-60
Back to the equation:
-(-12x-60)
-4x+12x+60+4=0
We add all the numbers together, and all the variables
8x+64=0
We move all terms containing x to the left, all other terms to the right
8x=-64
x=-64/8
x=-8
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