54=-2(-1+7k)-2(3k+4)

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Solution for 54=-2(-1+7k)-2(3k+4) equation: 



54=-2(-1+7k)-2(3k+4)

We move all terms to the left:

54-(-2(-1+7k)-2(3k+4))=0

We add all the numbers together, and all the variables

-(-2(7k-1)-2(3k+4))+54=0



We calculate terms in parentheses: -(-2(7k-1)-2(3k+4)), so:

-2(7k-1)-2(3k+4)

We multiply parentheses

-14k-6k+2-8

We add all the numbers together, and all the variables

-20k-6

Back to the equation:

-(-20k-6)



We get rid of parentheses

20k+6+54=0

We add all the numbers together, and all the variables

20k+60=0

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

20k=-60

k=-60/20

k=-3

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