R=2(b-7)

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Solution for R=2(b-7) equation: 



=2(R-7)

We move all terms to the left:

-(2(R-7))=0



We calculate terms in parentheses: -(2(R-7)), so:

2(R-7)

We multiply parentheses

2R-14

Back to the equation:

-(2R-14)



We get rid of parentheses

-2R+14=0

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

-2R=-14

R=-14/-2

R=+7

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