9(-7k-7)=-504

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Solution for 9(-7k-7)=-504 equation: 



9(-7k-7)=-504

We move all terms to the left:

9(-7k-7)-(-504)=0

We add all the numbers together, and all the variables

9(-7k-7)+504=0

We multiply parentheses

-63k-63+504=0

We add all the numbers together, and all the variables

-63k+441=0

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

-63k=-441

k=-441/-63

k=+7

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