Solve the Subtraction Problem: 70 - 0 = ?

To solve this problem, we need to perform the subtraction operation $70 - 0$.

According to the properties of zero in arithmetic, subtracting zero from any number does not change the value of that number. Therefore:

• Step 1: Identify the operation: $70 - 0$
• Step 2: Recognize that subtracting zero keeps the original number the same.
• Step 3: The result is simply $70$.

Thus, the solution to the problem is $70$.