Solve the Expression: Finding the Value of 43-4

To solve this problem, we need to determine which expression is equivalent to $43 - 4$.

The expression $43 - 4$ can be broken down as follows:

• We know that $4 = 3 + 1$, so we can rewrite the expression as $43 - (3 + 1)$.
• This expression simplifies by subtracting in stages: first subtract $3$, then subtract $1$.
• Therefore, $43 - 4$ is equivalent to $43 - 3 - 1$.

Among the provided choices, option 4, $43 - 3 - 1$, is equivalent to $43 - 4$.

Thus, the solution to the problem is $43 - 3 - 1$.