Subtract 23,751 from 56,879.

To subtract 23,751 from 56,879, you align the numbers vertically with the units in their respective places:

56,879
- 23,751

Starting from the rightmost column, subtract 1 from 9, and since 9 is smaller than 1, you borrow 1 from the tens column, making the 7 in the tens column a 6, and the 8 in the thousands column a 7. So far, the equation looks like:

56,879
- 23,751
________

Now, subtract 1 from 19, which gives you 18. Write 8 below the line in your answer and reduce your borrow by 1 so that it becomes 6. The equation now looks like:

56,879
- 23,751
________
8

Next, subtract 5 from 7, which gives you 2. Write 2 below the line in your answer. The equation now looks like:

56,879
- 23,751
________
82

Finally, subtract 3 from 5, which gives you 2. Write 2 below the line in your answer. The equation now looks like:

56,879
- 23,751
________
289

Therefore, when you subtract 23,751 from 56,879, the result is 28,289.

To subtract 23,751 from 56,879, follow these steps:

Step 1: Align the numbers vertically:

56,879
- 23,751

Step 2: Start with the unit's place (rightmost digit) and subtract:

9 (from 9 - 1)
- 1 (from 1)

= 8

Step 3: Move to the next place value (tens place):

56, 8 7 9
- 23, 7 5 1
________

= 8 (from 8 - 5)

Step 4: Move to the next place value (hundreds place):

56, 8 7 9
- 23, 7 5 1
________

= 2 (from 7 - 5)

Step 5: Move to the next place value (thousands place):

56, 8 7 9
- 23, 7 5 1
________

= 3 (from 8 - 5)

Step 6: Move to the next place value (ten thousands place):

56, 8 7 9
- 23, 7 5 1
________

= 3 (from 6 - 3)

Step 7: Move to the next place value (hundred thousands place):

To subtract 23,751 from 56,879, you simply subtract the two numbers. Here's how you can do it step by step:

1. Start with the larger number, 56,879.
2. Write down the number you want to subtract (23,751) beneath it.
```
56,879
- 23,751
```
3. Begin subtracting from the rightmost column, which is the one's place. Subtract 1 from 9, which is 8, and write it down below the line.
```
56,879
- 23,751
______
8
```
4. Move to the next column, the ten's place. Subtract 5 from 7, which is 2. Since you can't subtract 7 from 5, you'll have to borrow from the next column (hundreds place). Add 1 to 5 (making it 15), then subtract 7 from the 15, which gives you 8. Write this down below the line.
```
56,879
- 23,751
______
2 8
```
5. Move to the next column, the hundred's place. Subtract 3 from 5, which is 2. Write this down.
```
56,879
- 23,751
______
2 28
```
6. Finally, subtract 2 from 5 in the thousands place, which is 3. Write this down.
```
56,879
- 23,751
______
3 28
```

Therefore, when you subtract 23,751 from 56,879, the result is 33,128.