Answer:
12
Step-by-step explanation:
Left:
Simplify the following:
-9 - -12
-(-12) = 12:
-9 + 12
-9 + 12 = 3:
Answer: 3
______________________
Right:
Do the following addition:
-9 + 12
The number -9 is negative. Start from 0 and move 9 to the left:
Show the addition of 12 to -9. Start from the end of the previous arrow and move 12 to the right:
The final arrow is pointed at 3. This is the answer:
Answer: 3
