4=2+2r

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Solution for 4=2+2r equation: 



4=2+2r

We move all terms to the left:

4-(2+2r)=0

We add all the numbers together, and all the variables

-(2r+2)+4=0

We get rid of parentheses

-2r-2+4=0

We add all the numbers together, and all the variables

-2r+2=0

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

-2r=-2

r=-2/-2

r=1

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