-7-513=-8(9-8a)

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Solution for -7-513=-8(9-8a) equation: 



-7-513=-8(9-8a)

We move all terms to the left:

-7-513-(-8(9-8a))=0

We add all the numbers together, and all the variables

-(-8(-8a+9))-7-513=0

We add all the numbers together, and all the variables

-(-8(-8a+9))-520=0



We calculate terms in parentheses: -(-8(-8a+9)), so:

-8(-8a+9)

We multiply parentheses

64a-72

Back to the equation:

-(64a-72)



We get rid of parentheses

-64a+72-520=0

We add all the numbers together, and all the variables

-64a-448=0

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

-64a=448

a=448/-64

a=-7

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