504=7(-8a+8)

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Solution for 504=7(-8a+8) equation: 



504=7(-8a+8)

We move all terms to the left:

504-(7(-8a+8))=0



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

7(-8a+8)

We multiply parentheses

-56a+56

Back to the equation:

-(-56a+56)



We get rid of parentheses

56a-56+504=0

We add all the numbers together, and all the variables

56a+448=0

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

56a=-448

a=-448/56

a=-8

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