40000=3.14r*2

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Solution for 40000=3.14r*2 equation: 



40000=3.14r*2

We move all terms to the left:

40000-(3.14r*2)=0

We add all the numbers together, and all the variables

-(+3.14r*2)+40000=0

We get rid of parentheses

-3.14r*2+40000=0

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

-3.14r*2=-40000

r=-40000/1

r=-40000

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