r+2=2r-1

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



r+2=2r-1

We move all terms to the left:

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

We get rid of parentheses

r-2r+1+2=0

We add all the numbers together, and all the variables

-1r+3=0

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

-r=-3

r=-3/-1

r=+3

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