-2(r-15)=4

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Solution for -2(r-15)=4 equation: 



-2(r-15)=4

We move all terms to the left:

-2(r-15)-(4)=0

We multiply parentheses

-2r+30-4=0

We add all the numbers together, and all the variables

-2r+26=0

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

-2r=-26

r=-26/-2

r=+13

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