3=r/10+5

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Solution for 3=r/10+5 equation: 



3=r/10+5

We move all terms to the left:

3-(r/10+5)=0

We get rid of parentheses

-r/10-5+3=0

We multiply all the terms by the denominator


-r-5*10+3*10=0

We add all the numbers together, and all the variables

-1r-20=0

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

-r=20

r=20/-1

r=-20

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