-9r+20=-11r-16

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Solution for -9r+20=-11r-16 equation: 



-9r+20=-11r-16

We move all terms to the left:

-9r+20-(-11r-16)=0

We get rid of parentheses

-9r+11r+16+20=0

We add all the numbers together, and all the variables

2r+36=0

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

2r=-36

r=-36/2

r=-18

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