-7r-8r=-7r

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Solution for -7r-8r=-7r equation: 



-7r-8r=-7r

We move all terms to the left:

-7r-8r-(-7r)=0

We add all the numbers together, and all the variables

-15r-(-7r)=0

We get rid of parentheses

-15r+7r=0

We add all the numbers together, and all the variables

-8r=0

r=0/-8

r=0

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