-7k=-9(k-4)

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Solution for -7k=-9(k-4) equation: 



-7k=-9(k-4)

We move all terms to the left:

-7k-(-9(k-4))=0



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

-9(k-4)

We multiply parentheses

-9k+36

Back to the equation:

-(-9k+36)



We get rid of parentheses

-7k+9k-36=0

We add all the numbers together, and all the variables

2k-36=0

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

2k=36

k=36/2

k=18

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