15=-8k-7k

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Solution for 15=-8k-7k equation: 



15=-8k-7k

We move all terms to the left:

15-(-8k-7k)=0

We add all the numbers together, and all the variables

-(-15k)+15=0

We get rid of parentheses

15k+15=0

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

15k=-15

k=-15/15

k=-1

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