r+7=13-5r

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Solution for r+7=13-5r equation: 



r+7=13-5r

We move all terms to the left:

r+7-(13-5r)=0

We add all the numbers together, and all the variables

r-(-5r+13)+7=0

We get rid of parentheses

r+5r-13+7=0

We add all the numbers together, and all the variables

6r-6=0

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

6r=6

r=6/6

r=1

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