84=4(5a+6)

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Solution for 84=4(5a+6) equation: 



84=4(5a+6)

We move all terms to the left:

84-(4(5a+6))=0



We calculate terms in parentheses: -(4(5a+6)), so:

4(5a+6)

We multiply parentheses

20a+24

Back to the equation:

-(20a+24)



We get rid of parentheses

-20a-24+84=0

We add all the numbers together, and all the variables

-20a+60=0

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

-20a=-60

a=-60/-20

a=+3

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