22=-2(-9+k)

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Solution for 22=-2(-9+k) equation: 



22=-2(-9+k)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-2(k-9)

We multiply parentheses

-2k+18

Back to the equation:

-(-2k+18)



We get rid of parentheses

2k-18+22=0

We add all the numbers together, and all the variables

2k+4=0

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

2k=-4

k=-4/2

k=-2

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