-2 - -9
The product of -2 and -9 is 18.
To subtract -2 from -9, we can follow the steps below:
Step 1: Remove the negative sign from -2 and change it to positive. (-2 becomes +2)
Step 2: Add the positive number to the negative number. (+2 + -9 = -7)
Therefore, -2 - (-9) equals -7.