-13r+11=-12-9-5r

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Solution for -13r+11=-12-9-5r equation: 



-13r+11=-12-9-5r

We move all terms to the left:

-13r+11-(-12-9-5r)=0

We add all the numbers together, and all the variables

-13r-(-5r-21)+11=0

We get rid of parentheses

-13r+5r+21+11=0

We add all the numbers together, and all the variables

-8r+32=0

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

-8r=-32

r=-32/-8

r=+4

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