126=-7(6+3k)

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Solution for 126=-7(6+3k) equation: 



126=-7(6+3k)

We move all terms to the left:

126-(-7(6+3k))=0

We add all the numbers together, and all the variables

-(-7(3k+6))+126=0



We calculate terms in parentheses: -(-7(3k+6)), so:

-7(3k+6)

We multiply parentheses

-21k-42

Back to the equation:

-(-21k-42)



We get rid of parentheses

21k+42+126=0

We add all the numbers together, and all the variables

21k+168=0

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

21k=-168

k=-168/21

k=-8

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