12.56=2(3.14)(r)

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Solution for 12.56=2(3.14)(r) equation: 



12.56=2(3.14)(r)

We move all terms to the left:

12.56-(2(3.14)(r))=0



We calculate terms in parentheses: -(2(3.14)r), so:

2(3.14)r

We multiply parentheses

6.28r

Back to the equation:

-(6.28r)



We add all the numbers together, and all the variables

-(+6.28r)+12.56=0

We get rid of parentheses

-6.28r+12.56=0

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

-6.28r=-12.56

r=-12.56/-6.28

r=+2

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