28.6=2(3.14)r

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Solution for 28.6=2(3.14)r equation: 



28.6=2(3.14)r

We move all terms to the left:

28.6-(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)+28.6=0

We get rid of parentheses

-6.28r+28.6=0

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

-6.28r=-28.6

r=-28.6/-6.28

r=4+1/1.8045977011494

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