Solve the Subtraction Equation: 7-0 = ?

To solve this problem, we will apply a straightforward arithmetic principle:

• Identify that the subtraction operation involves zero.
• Recall that subtracting zero from a number leaves the number unchanged.

Let's perform the calculation:

Given $7 - 0$, we know from the properties of zero that subtracting zero from any number gives us the same number. Therefore:

$7 - 0 = 7$

Thus, the solution to the problem is $7$.