12=9-k/3

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Solution for 12=9-k/3 equation: 



12=9-k/3

We move all terms to the left:

12-(9-k/3)=0

We add all the numbers together, and all the variables

-(-k/3+9)+12=0

We get rid of parentheses

k/3-9+12=0

We multiply all the terms by the denominator


k-9*3+12*3=0

We add all the numbers together, and all the variables

k+9=0

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

k=-9

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