12r+12=13r-12

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



12r+12=13r-12

We move all terms to the left:

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

We get rid of parentheses

12r-13r+12+12=0

We add all the numbers together, and all the variables

-1r+24=0

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

-r=-24

r=-24/-1

r=+24

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