R-1+2r=1+r+3r+4

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Solution for R-1+2r=1+r+3r+4 equation: 



-1+2R=1+R+3R+4

We move all terms to the left:

-1+2R-(1+R+3R+4)=0

We add all the numbers together, and all the variables

2R-(4R+5)-1=0

We get rid of parentheses

2R-4R-5-1=0

We add all the numbers together, and all the variables

-2R-6=0

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

-2R=6

R=6/-2

R=-3

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