13+r=7+6r

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



13+r=7+6r

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

r-6r-7+13=0

We add all the numbers together, and all the variables

-5r+6=0

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

-5r=-6

r=-6/-5

r=1+1/5

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