-5r-2r=-7r

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Solution for -5r-2r=-7r equation: 



-5r-2r=-7r

We move all terms to the left:

-5r-2r-(-7r)=0

We add all the numbers together, and all the variables

-7r-(-7r)=0

We get rid of parentheses

-7r+7r=0

We add all the numbers together, and all the variables

=0

r=0/1

r=0

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