117=3(4a+7)

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Solution for 117=3(4a+7) equation: 



117=3(4a+7)

We move all terms to the left:

117-(3(4a+7))=0



We calculate terms in parentheses: -(3(4a+7)), so:

3(4a+7)

We multiply parentheses

12a+21

Back to the equation:

-(12a+21)



We get rid of parentheses

-12a-21+117=0

We add all the numbers together, and all the variables

-12a+96=0

We move all terms containing a to the left, all other terms to the right

-12a=-96

a=-96/-12

a=+8

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