7r-4r+2=8r+2-r

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Solution for 7r-4r+2=8r+2-r equation: 



7r-4r+2=8r+2-r

We move all terms to the left:

7r-4r+2-(8r+2-r)=0

We add all the numbers together, and all the variables

7r-4r-(7r+2)+2=0

We add all the numbers together, and all the variables

3r-(7r+2)+2=0

We get rid of parentheses

3r-7r-2+2=0

We add all the numbers together, and all the variables

-4r=0

r=0/-4

r=0

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