6r+7=8r-15

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Solution for 6r+7=8r-15 equation: 



6r+7=8r-15

We move all terms to the left:

6r+7-(8r-15)=0

We get rid of parentheses

6r-8r+15+7=0

We add all the numbers together, and all the variables

-2r+22=0

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

-2r=-22

r=-22/-2

r=+11

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