7r-13=6r+7

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Solution for 7r-13=6r+7 equation: 



7r-13=6r+7

We move all terms to the left:

7r-13-(6r+7)=0

We get rid of parentheses

7r-6r-7-13=0

We add all the numbers together, and all the variables

r-20=0

We move all terms containing r to the left, all other terms to the right

r=20

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