Explanation:
The expression 2 - 4 ÷ 2 + 23 can be simplified as follows:
1. First, perform the division: 4 ÷ 2 = 2
2. Then, perform the subtraction: 2 - 2 = 0
3. At last, perform the addition: 0 + 23 = 23
So, the result of the expression 2 - 4 ÷ 2 + 23 is 23.