7r=2r+5r

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



7r=2r+5r

We move all terms to the left:

7r-(2r+5r)=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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