4-3

Could you clarify what you mean by "4-3"?

• If you mean the arithmetic: 4 − 3 = 1.
• If you mean Problem 4-3 from a textbook (chapter 4, problem 3): please paste the full problem text.
• If you mean Section/Chapter 4.3 in a course (e.g., calculus 4.3, algebra 4.3): tell me the subject and I can give a quick summary or worked example.

If you share the exact problem or subject, I’ll walk you through a full solution and show the key steps.