39=2k+k

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Solution for 39=2k+k equation: 



39=2k+k

We move all terms to the left:

39-(2k+k)=0

We add all the numbers together, and all the variables

-(+3k)+39=0

We get rid of parentheses

-3k+39=0

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

-3k=-39

k=-39/-3

k=+13

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