-30=k(-3)

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Solution for -30=k(-3) equation: 



-30=k(-3)

We move all terms to the left:

-30-(k(-3))=0



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

k(-3)

We multiply parentheses

-3k

Back to the equation:

-(-3k)



We get rid of parentheses

3k-30=0

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

3k=30

k=30/3

k=10

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