-2r+7=-31

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Solution for -2r+7=-31 equation: 



-2r+7=-31

We move all terms to the left:

-2r+7-(-31)=0

We add all the numbers together, and all the variables

-2r+38=0

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

-2r=-38

r=-38/-2

r=+19

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