Answer:
Addition equation = -11
Subtraction equation = -2
Explanation:
The number line are both in the negative region!
The longer arrow = -9
The shorter arrow = -2
An ADDITION EQUATION = -9 + (-2)
= -9 - 2
= -11
A SUBTRACTION EQUATION = -9 - (-2)
= -9 + 2
= -7
Enjoy!