12k-3(-6k-9)=-3(5-3k)

Solution for 12k-3(-6k-9)=-3(5-3k) equation:

12k-3(-6k-9)=-3(5-3k)

We move all terms to the left:

12k-3(-6k-9)-(-3(5-3k))=0

We add all the numbers together, and all the variables

12k-3(-6k-9)-(-3(-3k+5))=0

We multiply parentheses

12k+18k-(-3(-3k+5))+27=0


We calculate terms in parentheses: -(-3(-3k+5)), so:

-3(-3k+5)

We multiply parentheses

9k-15

Back to the equation:

-(9k-15)


We add all the numbers together, and all the variables

30k-(9k-15)+27=0

We get rid of parentheses

30k-9k+15+27=0

We add all the numbers together, and all the variables

21k+42=0

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

21k=-42

k=-42/21

k=-2