K(x)=3x-4

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Solution for K(x)=3x-4 equation: 



(K)=3K-4

We move all terms to the left:

(K)-(3K-4)=0

We get rid of parentheses

K-3K+4=0

We add all the numbers together, and all the variables

-2K+4=0

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

-2K=-4

K=-4/-2

K=+2

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