90=6(a+7)

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Solution for 90=6(a+7) equation:



90=6(a+7)
We move all terms to the left:
90-(6(a+7))=0
We calculate terms in parentheses: -(6(a+7)), so:
6(a+7)
We multiply parentheses
6a+42
Back to the equation:
-(6a+42)
We get rid of parentheses
-6a-42+90=0
We add all the numbers together, and all the variables
-6a+48=0
We move all terms containing a to the left, all other terms to the right
-6a=-48
a=-48/-6
a=+8

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