72=-6(3+k)

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Solution for 72=-6(3+k) equation: 



72=-6(3+k)

We move all terms to the left:

72-(-6(3+k))=0

We add all the numbers together, and all the variables

-(-6(k+3))+72=0



We calculate terms in parentheses: -(-6(k+3)), so:

-6(k+3)

We multiply parentheses

-6k-18

Back to the equation:

-(-6k-18)



We get rid of parentheses

6k+18+72=0

We add all the numbers together, and all the variables

6k+90=0

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

6k=-90

k=-90/6

k=-15

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