15-3k=k-7k

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Solution for 15-3k=k-7k equation: 



15-3k=k-7k

We move all terms to the left:

15-3k-(k-7k)=0

We add all the numbers together, and all the variables

-3k-(-6k)+15=0

We get rid of parentheses

-3k+6k+15=0

We add all the numbers together, and all the variables

3k+15=0

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

3k=-15

k=-15/3

k=-5

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