6r+7=13+8r

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



6r+7=13+8r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

6r-8r-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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