3=0.05*r

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Solution for 3=0.05*r equation: 



3=0.05r

We move all terms to the left:

3-(0.05r)=0

We add all the numbers together, and all the variables

-(+0.05r)+3=0

We get rid of parentheses

-0.05r+3=0

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

-0.05r=-3

r=-3/-0.05

r=+60

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