12+2=2r-13

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Solution for 12+2=2r-13 equation: 



12+2=2r-13

We move all terms to the left:

12+2-(2r-13)=0

We add all the numbers together, and all the variables

-(2r-13)+14=0

We get rid of parentheses

-2r+13+14=0

We add all the numbers together, and all the variables

-2r+27=0

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

-2r=-27

r=-27/-2

r=13+1/2

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