A=3(x+7)=

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Solution for A=3(x+7)= equation:



=3(A+7)=
We move all terms to the left:
-(3(A+7))=0
We calculate terms in parentheses: -(3(A+7)), so:
3(A+7)
We multiply parentheses
3A+21
Back to the equation:
-(3A+21)
We get rid of parentheses
-3A-21=0
We move all terms containing A to the left, all other terms to the right
-3A=21
A=21/-3
A=-7

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