-48=-3(r-1)

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Solution for -48=-3(r-1) equation: 



-48=-3(r-1)

We move all terms to the left:

-48-(-3(r-1))=0



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

-3(r-1)

We multiply parentheses

-3r+3

Back to the equation:

-(-3r+3)



We get rid of parentheses

3r-3-48=0

We add all the numbers together, and all the variables

3r-51=0

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

3r=51

r=51/3

r=17

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