-31=-5r+2r

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Solution for -31=-5r+2r equation: 



-31=-5r+2r

We move all terms to the left:

-31-(-5r+2r)=0

We add all the numbers together, and all the variables

-(-3r)-31=0

We get rid of parentheses

3r-31=0

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

3r=31

r=31/3

r=10+1/3

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