31.4=6.28r

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Solution for 31.4=6.28r equation: 



31.4=6.28r

We move all terms to the left:

31.4-(6.28r)=0

We add all the numbers together, and all the variables

-(+6.28r)+31.4=0

We get rid of parentheses

-6.28r+31.4=0

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

-6.28r=-31.4

r=-31.4/-6.28

r=5+-3.5527136788005E-15/6.28

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