13=(3.14r)

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Solution for 13=(3.14r) equation: 



13=(3.14r)

We move all terms to the left:

13-((3.14r))=0

We add all the numbers together, and all the variables

-((+3.14r))+13=0



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

(+3.14r)

We get rid of parentheses

3.14r

Back to the equation:

-(3.14r)



We add all the numbers together, and all the variables

-(+3.14r)+13=0

We get rid of parentheses

-3.14r+13=0

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

-3.14r=-13

r=-13/-3.14

r=4+0.44/3.14

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