9=11-(r-5)

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Solution for 9=11-(r-5) equation: 



9=11-(r-5)

We move all terms to the left:

9-(11-(r-5))=0



We calculate terms in parentheses: -(11-(r-5)), so:

11-(r-5)

determiningTheFunctionDomain
-(r-5)+11

We get rid of parentheses

-r+5+11

We add all the numbers together, and all the variables

-1r+16

Back to the equation:

-(-1r+16)



We get rid of parentheses

1r-16+9=0

We add all the numbers together, and all the variables

r-7=0

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

r=7

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