Solution - Long subtraction
43,858
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 4 | 3 | 8 | 7 | 5 | |
| - | 1 | 7 | |||
2. Subtract the numbers using long subtraction method
Because the upper digit (5) in the ones column is too small to get a positive difference, borrow 1 from the digit (7) in the next number place which becomes (6) and get (15).
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 15 | ||||
| 4 | 3 | 8 | 7 | 5 | |
| - | 1 | 7 | |||
Subtract the numbers in the ones column from the top number:
15-7=8
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 15 | ||||
| 4 | 3 | 8 | 7 | 5 | |
| - | 1 | 7 | |||
| 8 |
Subtract the numbers in the tens column from the top number:
6-1=5
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 15 | ||||
| 4 | 3 | 8 | 7 | 5 | |
| - | 1 | 7 | |||
| 5 | 8 |
Write 8 in the hundreds place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 15 | ||||
| 4 | 3 | 8 | 7 | 5 | |
| - | 1 | 7 | |||
| 8 | 5 | 8 |
Write 3 in the thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 15 | ||||
| 4 | 3 | 8 | 7 | 5 | |
| - | 1 | 7 | |||
| 3 | 8 | 5 | 8 |
Write 4 in the ten thousands place.
| Place value | ten thousands | thousands | hundreds | tens | ones |
| 6 | 15 | ||||
| 4 | 3 | 8 | 7 | 5 | |
| - | 1 | 7 | |||
| 4 | 3 | 8 | 5 | 8 |
The solution is: 43,858
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