-k-9=3+k

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Solution for -k-9=3+k equation: 



-k-9=3+k

We move all terms to the left:

-k-9-(3+k)=0

We add all the numbers together, and all the variables

-k-(k+3)-9=0

We add all the numbers together, and all the variables

-1k-(k+3)-9=0

We get rid of parentheses

-1k-k-3-9=0

We add all the numbers together, and all the variables

-2k-12=0

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

-2k=12

k=12/-2

k=-6

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