13+7r=4r+7+2r*

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Solution for 13+7r=4r+7+2r* equation: 



13+7r=4r+7+2r*

We move all terms to the left:

13+7r-(4r+7+2r*)=0

We add all the numbers together, and all the variables

7r-(4r+2r*+7)+13=0

We get rid of parentheses

7r-4r-2r*-7+13=0

We add all the numbers together, and all the variables

3r-2r*+6=0

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

3r-2r*=-6

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