(-20r)+(5r)=15r

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Solution for (-20r)+(5r)=15r equation: 



(-20r)+(5r)=15r

We move all terms to the left:

(-20r)+(5r)-(15r)=0

We add all the numbers together, and all the variables

-10r+(-20r)=0

We get rid of parentheses

-10r-20r=0

We add all the numbers together, and all the variables

-30r=0

r=0/-30

r=0

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