2r-9+11r=8r-1

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Solution for 2r-9+11r=8r-1 equation: 



2r-9+11r=8r-1

We move all terms to the left:

2r-9+11r-(8r-1)=0

We add all the numbers together, and all the variables

13r-(8r-1)-9=0

We get rid of parentheses

13r-8r+1-9=0

We add all the numbers together, and all the variables

5r-8=0

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

5r=8

r=8/5

r=1+3/5

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