-13r+12=13r-13

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



-13r+12=13r-13

We move all terms to the left:

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

We get rid of parentheses

-13r-13r+13+12=0

We add all the numbers together, and all the variables

-26r+25=0

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

-26r=-25

r=-25/-26

r=25/26

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