-13+4r=15-3r

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Solution for -13+4r=15-3r equation: 



-13+4r=15-3r

We move all terms to the left:

-13+4r-(15-3r)=0

We add all the numbers together, and all the variables

4r-(-3r+15)-13=0

We get rid of parentheses

4r+3r-15-13=0

We add all the numbers together, and all the variables

7r-28=0

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

7r=28

r=28/7

r=4

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