-2+4R=2r-8

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Solution for -2+4R=2r-8 equation: 



-2+4=2R-8

We move all terms to the left:

-2+4-(2R-8)=0

We add all the numbers together, and all the variables

-(2R-8)+2=0

We get rid of parentheses

-2R+8+2=0

We add all the numbers together, and all the variables

-2R+10=0

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

-2R=-10

R=-10/-2

R=+5

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