12r-118=13r+18

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Solution for 12r-118=13r+18 equation: 



12r-118=13r+18

We move all terms to the left:

12r-118-(13r+18)=0

We get rid of parentheses

12r-13r-18-118=0

We add all the numbers together, and all the variables

-1r-136=0

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

-r=136

r=136/-1

r=-136

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