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40+6a=-2+6(a+7)
We move all terms to the left:
40+6a-(-2+6(a+7))=0
We calculate terms in parentheses: -(-2+6(a+7)), so:We get rid of parentheses
-2+6(a+7)
determiningTheFunctionDomain 6(a+7)-2
We multiply parentheses
6a+42-2
We add all the numbers together, and all the variables
6a+40
Back to the equation:
-(6a+40)
6a-6a-40+40=0
We add all the numbers together, and all the variables
=0
a=0/1
a=0
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