-15=-3r/5

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Solution for -15=-3r/5 equation: 



-15=-3r/5

We move all terms to the left:

-15-(-3r/5)=0

We get rid of parentheses

3r/5-15=0

We multiply all the terms by the denominator


3r-15*5=0

We add all the numbers together, and all the variables

3r-75=0

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

3r=75

r=75/3

r=25

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