55=-5-5(-4r-4)

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Solution for 55=-5-5(-4r-4) equation: 



55=-5-5(-4r-4)

We move all terms to the left:

55-(-5-5(-4r-4))=0



We calculate terms in parentheses: -(-5-5(-4r-4)), so:

-5-5(-4r-4)

determiningTheFunctionDomain
-5(-4r-4)-5

We multiply parentheses

20r+20-5

We add all the numbers together, and all the variables

20r+15

Back to the equation:

-(20r+15)



We get rid of parentheses

-20r-15+55=0

We add all the numbers together, and all the variables

-20r+40=0

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

-20r=-40

r=-40/-20

r=+2

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