-10=r+12

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Solution for -10=r+12 equation: 



-10=r+12

We move all terms to the left:

-10-(r+12)=0

We get rid of parentheses

-r-12-10=0

We add all the numbers together, and all the variables

-1r-22=0

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

-r=22

r=22/-1

r=-22

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