4=3k-7k

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Solution for 4=3k-7k equation: 



4=3k-7k

We move all terms to the left:

4-(3k-7k)=0

We add all the numbers together, and all the variables

-(-4k)+4=0

We get rid of parentheses

4k+4=0

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

4k=-4

k=-4/4

k=-1

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