-2(r-15)=18

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Solution for -2(r-15)=18 equation: 



-2(r-15)=18

We move all terms to the left:

-2(r-15)-(18)=0

We multiply parentheses

-2r+30-18=0

We add all the numbers together, and all the variables

-2r+12=0

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

-2r=-12

r=-12/-2

r=+6

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