7r+13=6+8r

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Solution for 7r+13=6+8r equation: 



7r+13=6+8r

We move all terms to the left:

7r+13-(6+8r)=0

We add all the numbers together, and all the variables

7r-(8r+6)+13=0

We get rid of parentheses

7r-8r-6+13=0

We add all the numbers together, and all the variables

-1r+7=0

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

-r=-7

r=-7/-1

r=+7

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