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-2(1-a)=2(4+2a)
We move all terms to the left:
-2(1-a)-(2(4+2a))=0
We add all the numbers together, and all the variables
-2(-1a+1)-(2(2a+4))=0
We multiply parentheses
2a-(2(2a+4))-2=0
We calculate terms in parentheses: -(2(2a+4)), so:We get rid of parentheses
2(2a+4)
We multiply parentheses
4a+8
Back to the equation:
-(4a+8)
2a-4a-8-2=0
We add all the numbers together, and all the variables
-2a-10=0
We move all terms containing a to the left, all other terms to the right
-2a=10
a=10/-2
a=-5
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