7r+7=13+5r

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



7r+7=13+5r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

7r-5r-13+7=0

We add all the numbers together, and all the variables

2r-6=0

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

2r=6

r=6/2

r=3

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