-9=-3(r-16)

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Solution for -9=-3(r-16) equation: 



-9=-3(r-16)

We move all terms to the left:

-9-(-3(r-16))=0



We calculate terms in parentheses: -(-3(r-16)), so:

-3(r-16)

We multiply parentheses

-3r+48

Back to the equation:

-(-3r+48)



We get rid of parentheses

3r-48-9=0

We add all the numbers together, and all the variables

3r-57=0

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

3r=57

r=57/3

r=19

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