-3(r+2)=15

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Solution for -3(r+2)=15 equation: 



-3(r+2)=15

We move all terms to the left:

-3(r+2)-(15)=0

We multiply parentheses

-3r-6-15=0

We add all the numbers together, and all the variables

-3r-21=0

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

-3r=21

r=21/-3

r=-7

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