-504=-7(8-8a)

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



-504=-7(8-8a)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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