87=-3(3a-8)

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Solution for 87=-3(3a-8) equation: 



87=-3(3a-8)

We move all terms to the left:

87-(-3(3a-8))=0



We calculate terms in parentheses: -(-3(3a-8)), so:

-3(3a-8)

We multiply parentheses

-9a+24

Back to the equation:

-(-9a+24)



We get rid of parentheses

9a-24+87=0

We add all the numbers together, and all the variables

9a+63=0

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

9a=-63

a=-63/9

a=-7

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