Question

K-9=-3 ???????????????

Answer 1

You need to get K by itself and to do that do the opposite of -9 which is +9 and do the +9 to the -3 and positive 9 plus negative 3 is 6 so it it positive 6.
K=6

Answer 2

k = 6

Explanation:

k -9 = -3

add 9 to both sides

and you get

k = 6