William completed the following order of operations problem recently on a test. 10 – 4 ÷ (2) + (9 – 5) ● 3 He worked the problem from left to right and got an answer of 21. His teacher marked the problem incorrect. Why is William’s answer incorrect? Show and explain what William did incorrectly. Then, solve the problem correctly and explain how you got the correct answer.

PLEASE HELP ASAP