84=7(a+8)

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Solution for 84=7(a+8) equation: 



84=7(a+8)

We move all terms to the left:

84-(7(a+8))=0



We calculate terms in parentheses: -(7(a+8)), so:

7(a+8)

We multiply parentheses

7a+56

Back to the equation:

-(7a+56)



We get rid of parentheses

-7a-56+84=0

We add all the numbers together, and all the variables

-7a+28=0

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

-7a=-28

a=-28/-7

a=+4

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