18=3(r-8)

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Solution for 18=3(r-8) equation: 



18=3(r-8)

We move all terms to the left:

18-(3(r-8))=0



We calculate terms in parentheses: -(3(r-8)), so:

3(r-8)

We multiply parentheses

3r-24

Back to the equation:

-(3r-24)



We get rid of parentheses

-3r+24+18=0

We add all the numbers together, and all the variables

-3r+42=0

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

-3r=-42

r=-42/-3

r=+14

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