r+31=-12r+4

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Solution for r+31=-12r+4 equation: 



r+31=-12r+4

We move all terms to the left:

r+31-(-12r+4)=0

We get rid of parentheses

r+12r-4+31=0

We add all the numbers together, and all the variables

13r+27=0

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

13r=-27

r=-27/13

r=-2+1/13

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