27=r-7

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Solution for 27=r-7 equation: 



27=r-7

We move all terms to the left:

27-(r-7)=0

We get rid of parentheses

-r+7+27=0

We add all the numbers together, and all the variables

-1r+34=0

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

-r=-34

r=-34/-1

r=+34

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