-87=3(3r+8)

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Solution for -87=3(3r+8) equation: 



-87=3(3r+8)

We move all terms to the left:

-87-(3(3r+8))=0



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

3(3r+8)

We multiply parentheses

9r+24

Back to the equation:

-(9r+24)



We get rid of parentheses

-9r-24-87=0

We add all the numbers together, and all the variables

-9r-111=0

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

-9r=111

r=111/-9

r=-12+1/3

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