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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

7r-4r-(6r+7)+7=0

We add all the numbers together, and all the variables

3r-(6r+7)+7=0

We get rid of parentheses

3r-6r-7+7=0

We add all the numbers together, and all the variables

-3r=0

r=0/-3

r=0

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