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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

4r-7r-7+7=0

We add all the numbers together, and all the variables

-3r=0

r=0/-3

r=0

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