-k-2k=7(2k-4)+3(k-4)

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Solution for -k-2k=7(2k-4)+3(k-4) equation: 



-k-2k=7(2k-4)+3(k-4)

We move all terms to the left:

-k-2k-(7(2k-4)+3(k-4))=0

We add all the numbers together, and all the variables

-3k-(7(2k-4)+3(k-4))=0



We calculate terms in parentheses: -(7(2k-4)+3(k-4)), so:

7(2k-4)+3(k-4)

We multiply parentheses

14k+3k-28-12

We add all the numbers together, and all the variables

17k-40

Back to the equation:

-(17k-40)



We get rid of parentheses

-3k-17k+40=0

We add all the numbers together, and all the variables

-20k+40=0

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

-20k=-40

k=-40/-20

k=+2

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