9k+12k=-2(k+6)-5(k-8)

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Solution for 9k+12k=-2(k+6)-5(k-8) equation: 



9k+12k=-2(k+6)-5(k-8)

We move all terms to the left:

9k+12k-(-2(k+6)-5(k-8))=0

We add all the numbers together, and all the variables

21k-(-2(k+6)-5(k-8))=0



We calculate terms in parentheses: -(-2(k+6)-5(k-8)), so:

-2(k+6)-5(k-8)

We multiply parentheses

-2k-5k-12+40

We add all the numbers together, and all the variables

-7k+28

Back to the equation:

-(-7k+28)



We get rid of parentheses

21k+7k-28=0

We add all the numbers together, and all the variables

28k-28=0

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

28k=28

k=28/28

k=1

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