Answer :
Answer:
21
Step-by-step explanation:
Because 9 + 12 equals 21 and when you're adding negative numbers you don't add the negative part So it's going to be 21 by itself
Answer:
21
Step-by-step explanation:
Because 9 + 12 equals 21 and when you're adding negative numbers you don't add the negative part So it's going to be 21 by itself