-3r-3(-4r-5)=87

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Solution for -3r-3(-4r-5)=87 equation: 



-3r-3(-4r-5)=87

We move all terms to the left:

-3r-3(-4r-5)-(87)=0

We multiply parentheses

-3r+12r+15-87=0

We add all the numbers together, and all the variables

9r-72=0

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

9r=72

r=72/9

r=8

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