-2r-1=2r+11

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



-2r-1=2r+11

We move all terms to the left:

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

We get rid of parentheses

-2r-2r-11-1=0

We add all the numbers together, and all the variables

-4r-12=0

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

-4r=12

r=12/-4

r=-3

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