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84=64(4+2x)
We move all terms to the left:
84-(64(4+2x))=0
We add all the numbers together, and all the variables
-(64(2x+4))+84=0
We calculate terms in parentheses: -(64(2x+4)), so:We get rid of parentheses
64(2x+4)
We multiply parentheses
128x+256
Back to the equation:
-(128x+256)
-128x-256+84=0
We add all the numbers together, and all the variables
-128x-172=0
We move all terms containing x to the left, all other terms to the right
-128x=172
x=172/-128
x=-1+11/32
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