R2+4r=77

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Solution for R2+4r=77 equation: 



2+4R=77

We move all terms to the left:

2+4R-(77)=0

We add all the numbers together, and all the variables

4R-75=0

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

4R=75

R=75/4

R=18+3/4

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