R+1=2r-7

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Solution for R+1=2r-7 equation: 



+1=2R-7

We move all terms to the left:

+1-(2R-7)=0

We get rid of parentheses

-2R+7+1=0

We add all the numbers together, and all the variables

-2R+8=0

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

-2R=-8

R=-8/-2

R=+4

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