Answer:
Sum of 367 and 863 is equal to the sum of 863 and 367. Thus, 367 is the required number.
Step-by-step explanation:
<u>Commutative property of Addition</u>
Let a and b be two real numbers. Then commutative property of addition states that the sum of a and b is equal to the sum of b and a that is

Similarly, we a re given here,

Thus, sum of 367 and 863 is equal to the sum of 863 and 367.
Thus, 367 is the required number.