1=2+r

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Solution for 1=2+r equation: 



1=2+r

We move all terms to the left:

1-(2+r)=0

We add all the numbers together, and all the variables

-(r+2)+1=0

We get rid of parentheses

-r-2+1=0

We add all the numbers together, and all the variables

-1r-1=0

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

-r=1

r=1/-1

r=-1

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