r+11+8r=20-2r+2

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Solution for r+11+8r=20-2r+2 equation: 



r+11+8r=20-2r+2

We move all terms to the left:

r+11+8r-(20-2r+2)=0

We add all the numbers together, and all the variables

r+8r-(-2r+22)+11=0

We add all the numbers together, and all the variables

9r-(-2r+22)+11=0

We get rid of parentheses

9r+2r-22+11=0

We add all the numbers together, and all the variables

11r-11=0

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

11r=11

r=11/11

r=1

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