15r-45=3(2r-3)

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Solution for 15r-45=3(2r-3) equation: 



15r-45=3(2r-3)

We move all terms to the left:

15r-45-(3(2r-3))=0



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

3(2r-3)

We multiply parentheses

6r-9

Back to the equation:

-(6r-9)



We get rid of parentheses

15r-6r+9-45=0

We add all the numbers together, and all the variables

9r-36=0

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

9r=36

r=36/9

r=4

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