55=-5(3r+3)+r

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Solution for 55=-5(3r+3)+r equation: 



55=-5(3r+3)+r

We move all terms to the left:

55-(-5(3r+3)+r)=0



We calculate terms in parentheses: -(-5(3r+3)+r), so:

-5(3r+3)+r

We add all the numbers together, and all the variables

r-5(3r+3)

We multiply parentheses

r-15r-15

We add all the numbers together, and all the variables

-14r-15

Back to the equation:

-(-14r-15)



We get rid of parentheses

14r+15+55=0

We add all the numbers together, and all the variables

14r+70=0

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

14r=-70

r=-70/14

r=-5

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