-12=2k+4k

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Solution for -12=2k+4k equation: 



-12=2k+4k

We move all terms to the left:

-12-(2k+4k)=0

We add all the numbers together, and all the variables

-(+6k)-12=0

We get rid of parentheses

-6k-12=0

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

-6k=12

k=12/-6

k=-2

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