84=3(6a+4)

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Solution for 84=3(6a+4) equation: 



84=3(6a+4)

We move all terms to the left:

84-(3(6a+4))=0



We calculate terms in parentheses: -(3(6a+4)), so:

3(6a+4)

We multiply parentheses

18a+12

Back to the equation:

-(18a+12)



We get rid of parentheses

-18a-12+84=0

We add all the numbers together, and all the variables

-18a+72=0

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

-18a=-72

a=-72/-18

a=+4

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