-15=5(3r-10)-5r

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Solution for -15=5(3r-10)-5r equation: 



-15=5(3r-10)-5r

We move all terms to the left:

-15-(5(3r-10)-5r)=0



We calculate terms in parentheses: -(5(3r-10)-5r), so:

5(3r-10)-5r

We add all the numbers together, and all the variables

-5r+5(3r-10)

We multiply parentheses

-5r+15r-50

We add all the numbers together, and all the variables

10r-50

Back to the equation:

-(10r-50)



We get rid of parentheses

-10r+50-15=0

We add all the numbers together, and all the variables

-10r+35=0

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

-10r=-35

r=-35/-10

r=3+1/2

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