15=-5(k+9)

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Solution for 15=-5(k+9) equation: 



15=-5(k+9)

We move all terms to the left:

15-(-5(k+9))=0



We calculate terms in parentheses: -(-5(k+9)), so:

-5(k+9)

We multiply parentheses

-5k-45

Back to the equation:

-(-5k-45)



We get rid of parentheses

5k+45+15=0

We add all the numbers together, and all the variables

5k+60=0

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

5k=-60

k=-60/5

k=-12

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