11(2-2r)=-2(r+9)

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Solution for 11(2-2r)=-2(r+9) equation: 



11(2-2r)=-2(r+9)

We move all terms to the left:

11(2-2r)-(-2(r+9))=0

We add all the numbers together, and all the variables

11(-2r+2)-(-2(r+9))=0

We multiply parentheses

-22r-(-2(r+9))+22=0



We calculate terms in parentheses: -(-2(r+9)), so:

-2(r+9)

We multiply parentheses

-2r-18

Back to the equation:

-(-2r-18)



We get rid of parentheses

-22r+2r+18+22=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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