3k+15=39-k

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Solution for 3k+15=39-k equation: 



3k+15=39-k

We move all terms to the left:

3k+15-(39-k)=0

We add all the numbers together, and all the variables

3k-(-1k+39)+15=0

We get rid of parentheses

3k+1k-39+15=0

We add all the numbers together, and all the variables

4k-24=0

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

4k=24

k=24/4

k=6

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