-9=-2k-7k

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Solution for -9=-2k-7k equation: 



-9=-2k-7k

We move all terms to the left:

-9-(-2k-7k)=0

We add all the numbers together, and all the variables

-(-9k)-9=0

We get rid of parentheses

9k-9=0

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

9k=9

k=9/9

k=1

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