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