Answer:
A. Yes
B. No
C. Yes
Step-by-step explanation:
A. 90 divided by -9 equals -10. So -10+10=0
B. -10 times -9 equals 90. 90+90=180
C. -90 dived by 9 equals -10. Subtracting a negative number is equal to adding it so -10 - (-10) = 0
