45=3(4r-1)

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Solution for 45=3(4r-1) equation: 



45=3(4r-1)

We move all terms to the left:

45-(3(4r-1))=0



We calculate terms in parentheses: -(3(4r-1)), so:

3(4r-1)

We multiply parentheses

12r-3

Back to the equation:

-(12r-3)



We get rid of parentheses

-12r+3+45=0

We add all the numbers together, and all the variables

-12r+48=0

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

-12r=-48

r=-48/-12

r=+4

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