3=r/10-2

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Solution for 3=r/10-2 equation: 



3=r/10-2

We move all terms to the left:

3-(r/10-2)=0

We get rid of parentheses

-r/10+2+3=0

We multiply all the terms by the denominator


-r+2*10+3*10=0

We add all the numbers together, and all the variables

-1r+50=0

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

-r=-50

r=-50/-1

r=+50

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