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8=4(a-2))+4
We move all terms to the left:
8-(4(a-2))+4)=0
We add all the numbers together, and all the variables
-(4(a-2))=0
We calculate terms in parentheses: -(4(a-2)), so:We get rid of parentheses
4(a-2)
We multiply parentheses
4a-8
Back to the equation:
-(4a-8)
-4a+8=0
We move all terms containing a to the left, all other terms to the right
-4a=-8
a=-8/-4
a=+2
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