-42+3k=k-4k

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Solution for -42+3k=k-4k equation: 



-42+3k=k-4k

We move all terms to the left:

-42+3k-(k-4k)=0

We add all the numbers together, and all the variables

3k-(-3k)-42=0

We get rid of parentheses

3k+3k-42=0

We add all the numbers together, and all the variables

6k-42=0

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

6k=42

k=42/6

k=7

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