Step-by-step explanation:
mình nghĩ là như vầy. Chúc bạn học tôt :))))
Answer:
33
Step-by-step explanation:
D has the commutative property because it just flip flopped the numbers.
5+4=9 es uno 4+5=9 es Otro 9-5=4 es Otro 9-4=5
Step-by-step explanation:
Bc is also 20 answer is 400