Solve: 768 minus 74 - Three-Digit Subtraction Problem

$\begin{aligned} &768 \\ -& \\ &~~74 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

To solve this subtraction problem of $768 - 74$, we'll use vertical subtraction with borrowing:

Let's lay out the subtraction:

$\begin{array}{c} &7\ 6\ 8 \\ - & \phantom0\ 7\ 4 \\ \hline \end{array}$

Follow these steps:

• Step 1: Start with the ones column. Subtract 4 from 8. Since 8 is larger, we simply do $8 - 4 = 4$.

• Step 2: Move to the tens column. Subtract 7 from 6. Here, 6 is smaller than 7, so we need to borrow from the hundreds column.
  - Cross out the "7" in hundreds place and reduce it by 1 to make it "6".
  - Change 6 in the tens place to 16.
  - Now, perform the subtraction: $16 - 7 = 9$.

• Step 3: Move to the hundreds column. Subtract 0 from 7 (after reduction): $7 - 0 = 6$.

Thus, the result of the subtraction is:

$\begin{array}{c} 6\ 9\ 4 \\ \end{array}$

Therefore, the answer to the subtraction problem is $694$.