9+k-2=12-9

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Solution for 9+k-2=12-9 equation: 



9+k-2=12-9

We move all terms to the left:

9+k-2-(12-9)=0

We add all the numbers together, and all the variables

k+9-2-3=0

We add all the numbers together, and all the variables

k+4=0

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

k=-4

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