18-9r=-3(2r-5)

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Solution for 18-9r=-3(2r-5) equation: 



18-9r=-3(2r-5)

We move all terms to the left:

18-9r-(-3(2r-5))=0



We calculate terms in parentheses: -(-3(2r-5)), so:

-3(2r-5)

We multiply parentheses

-6r+15

Back to the equation:

-(-6r+15)



We get rid of parentheses

-9r+6r-15+18=0

We add all the numbers together, and all the variables

-3r+3=0

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

-3r=-3

r=-3/-3

r=1

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