-9(3+12k)=-9(10k-3)

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Solution for -9(3+12k)=-9(10k-3) equation: 



-9(3+12k)=-9(10k-3)

We move all terms to the left:

-9(3+12k)-(-9(10k-3))=0

We add all the numbers together, and all the variables

-9(12k+3)-(-9(10k-3))=0

We multiply parentheses

-108k-(-9(10k-3))-27=0



We calculate terms in parentheses: -(-9(10k-3)), so:

-9(10k-3)

We multiply parentheses

-90k+27

Back to the equation:

-(-90k+27)



We get rid of parentheses

-108k+90k-27-27=0

We add all the numbers together, and all the variables

-18k-54=0

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

-18k=54

k=54/-18

k=-3

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