Question

-k - (-8k)!!!

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Answer 1

7k

Explanation:

-k - (-8k)

if there is "-" in front on an inner form, change the sign of each quarter to the form.

-k + 8k

Simplify similar tribes with add or subtract.

= 7k

Answer 2

7k

Explanation:

-k - -(8k): the - sign cancels out the - in 8k so it would only leave -k+8k=7k