K-(-2k)=9

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Solution for K-(-2k)=9 equation: 



-(-2K)=9

We move all terms to the left:

-(-2K)-(9)=0

We get rid of parentheses

2K-9=0

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

2K=9

K=9/2

K=4+1/2

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