-2(r+4)=18

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Solution for -2(r+4)=18 equation: 



-2(r+4)=18

We move all terms to the left:

-2(r+4)-(18)=0

We multiply parentheses

-2r-8-18=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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