7+4r=13+8r

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Solution for 7+4r=13+8r equation: 



7+4r=13+8r

We move all terms to the left:

7+4r-(13+8r)=0

We add all the numbers together, and all the variables

4r-(8r+13)+7=0

We get rid of parentheses

4r-8r-13+7=0

We add all the numbers together, and all the variables

-4r-6=0

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

-4r=6

r=6/-4

r=-1+1/2

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