7.42=2(3.14)*r

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Solution for 7.42=2(3.14)*r equation: 



7.42=2(3.14)*r

We move all terms to the left:

7.42-(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)+7.42=0

We get rid of parentheses

-6.28r+7.42=0

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

-6.28r=-7.42

r=-7.42/-6.28

r=1+1/5.5087719298246

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