18=-6+4(k+9)

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Solution for 18=-6+4(k+9) equation: 



18=-6+4(k+9)

We move all terms to the left:

18-(-6+4(k+9))=0



We calculate terms in parentheses: -(-6+4(k+9)), so:

-6+4(k+9)

determiningTheFunctionDomain
4(k+9)-6

We multiply parentheses

4k+36-6

We add all the numbers together, and all the variables

4k+30

Back to the equation:

-(4k+30)



We get rid of parentheses

-4k-30+18=0

We add all the numbers together, and all the variables

-4k-12=0

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

-4k=12

k=12/-4

k=-3

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