Perform the subtraction: 793 - 154

Quick explanation:

Step-by-step solution:

1. Step 1: Subtract the ones column: 3 - 4. Since 3 is less than 4, we borrow from the tens place. The 9 in the tens place becomes 8, and the 3 becomes 13. 13 - 4 = 9.
2. Step 2: Subtract the tens column: 8 - 5 = 3.
3. Step 3: Subtract the hundreds column: 7 - 1 = 6.

Answer: 639