Answer:
Sum of 367 and 863 is equal to the sum of 863 and 367. Thus, 367 is the required number.
Explanation:
Commutative property of Addition
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
![a + b = b + a](https://img.qammunity.org/2019/formulas/mathematics/middle-school/as3r6zmxbtt6banrzko0crc2nlbbfv23bo.png)
Similarly, we a re given here,
![367 + 863 = 1230\\1230 = 863 + 367](https://img.qammunity.org/2019/formulas/mathematics/middle-school/wxoypucu9fw2jnksk8ipnps89bzx0ygecv.png)
Thus, sum of 367 and 863 is equal to the sum of 863 and 367.
Thus, 367 is the required number.