R=4+7x-x

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Solution for R=4+7x-x equation: 



=4+7R-R

We move all terms to the left:

-(4+7R-R)=0

We add all the numbers together, and all the variables

-(6R+4)=0

We get rid of parentheses

-6R-4=0

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

-6R=4

R=4/-6

R=-2/3

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