4k-12=-40

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Solution for 4k-12=-40 equation: 



4k-12=-40

We move all terms to the left:

4k-12-(-40)=0

We add all the numbers together, and all the variables

4k+28=0

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

4k=-28

k=-28/4

k=-7

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