18=-2(-3+k)

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Solution for 18=-2(-3+k) equation: 



18=-2(-3+k)

We move all terms to the left:

18-(-2(-3+k))=0

We add all the numbers together, and all the variables

-(-2(k-3))+18=0



We calculate terms in parentheses: -(-2(k-3)), so:

-2(k-3)

We multiply parentheses

-2k+6

Back to the equation:

-(-2k+6)



We get rid of parentheses

2k-6+18=0

We add all the numbers together, and all the variables

2k+12=0

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

2k=-12

k=-12/2

k=-6

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