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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