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4a-8=12+12(a+7)
We move all terms to the left:
4a-8-(12+12(a+7))=0
We calculate terms in parentheses: -(12+12(a+7)), so:We get rid of parentheses
12+12(a+7)
determiningTheFunctionDomain 12(a+7)+12
We multiply parentheses
12a+84+12
We add all the numbers together, and all the variables
12a+96
Back to the equation:
-(12a+96)
4a-12a-96-8=0
We add all the numbers together, and all the variables
-8a-104=0
We move all terms containing a to the left, all other terms to the right
-8a=104
a=104/-8
a=-13
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