12=-4k+7k

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Solution for 12=-4k+7k equation: 



12=-4k+7k

We move all terms to the left:

12-(-4k+7k)=0

We add all the numbers together, and all the variables

-(+3k)+12=0

We get rid of parentheses

-3k+12=0

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

-3k=-12

k=-12/-3

k=+4

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