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27=7+3(r-6)
We move all terms to the left:
27-(7+3(r-6))=0
We calculate terms in parentheses: -(7+3(r-6)), so:We get rid of parentheses
7+3(r-6)
determiningTheFunctionDomain 3(r-6)+7
We multiply parentheses
3r-18+7
We add all the numbers together, and all the variables
3r-11
Back to the equation:
-(3r-11)
-3r+11+27=0
We add all the numbers together, and all the variables
-3r+38=0
We move all terms containing r to the left, all other terms to the right
-3r=-38
r=-38/-3
r=12+2/3
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