9=3(3k-4)-7k

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Solution for 9=3(3k-4)-7k equation: 



9=3(3k-4)-7k

We move all terms to the left:

9-(3(3k-4)-7k)=0



We calculate terms in parentheses: -(3(3k-4)-7k), so:

3(3k-4)-7k

We add all the numbers together, and all the variables

-7k+3(3k-4)

We multiply parentheses

-7k+9k-12

We add all the numbers together, and all the variables

2k-12

Back to the equation:

-(2k-12)



We get rid of parentheses

-2k+12+9=0

We add all the numbers together, and all the variables

-2k+21=0

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

-2k=-21

k=-21/-2

k=10+1/2

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