3+13r-2=8r+91-5r

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Solution for 3+13r-2=8r+91-5r equation: 



3+13r-2=8r+91-5r

We move all terms to the left:

3+13r-2-(8r+91-5r)=0

We add all the numbers together, and all the variables

13r-(3r+91)+3-2=0

We add all the numbers together, and all the variables

13r-(3r+91)+1=0

We get rid of parentheses

13r-3r-91+1=0

We add all the numbers together, and all the variables

10r-90=0

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

10r=90

r=90/10

r=9

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