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86=8a-6(-a+2)
We move all terms to the left:
86-(8a-6(-a+2))=0
We add all the numbers together, and all the variables
-(8a-6(-1a+2))+86=0
We calculate terms in parentheses: -(8a-6(-1a+2)), so:We get rid of parentheses
8a-6(-1a+2)
We multiply parentheses
8a+6a-12
We add all the numbers together, and all the variables
14a-12
Back to the equation:
-(14a-12)
-14a+12+86=0
We add all the numbers together, and all the variables
-14a+98=0
We move all terms containing a to the left, all other terms to the right
-14a=-98
a=-98/-14
a=+7
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