15=15(-3+k)

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Solution for 15=15(-3+k) equation: 



15=15(-3+k)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(15(k-3)), so:

15(k-3)

We multiply parentheses

15k-45

Back to the equation:

-(15k-45)



We get rid of parentheses

-15k+45+15=0

We add all the numbers together, and all the variables

-15k+60=0

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

-15k=-60

k=-60/-15

k=+4

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