Expand the expression.

-7 (6 - 3)

-k - 21

-7k + 21

-7k - 21

K + 21

(B.) - 7k+21

Step-by-step explanation:

Your first step should be to solve your original expression.

-7*6=-42

-7x-3=21.

You're finishing numbers are - 42 and 21.

-7k can equal to - 42 if k is 6.

So we can use - 7k

Since - 7x-3=21, Then the answer would have to be:

-7k+21.