Solution - Long subtraction
6,305
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones |
| 8 | 3 | 8 | 4 | |
| - | 2 | 0 | 7 | 9 |
2. Subtract the numbers using long subtraction method
Because the upper digit (4) in the ones column is too small to get a positive difference, borrow 1 from the digit (8) in the next number place which becomes (7) and get (14).
| Place value | thousands | hundreds | tens | ones |
| 7 | 14 | |||
| 8 | 3 | 8 | 4 | |
| - | 2 | 0 | 7 | 9 |
Subtract the numbers in the ones column from the top number:
14-9=5
| Place value | thousands | hundreds | tens | ones |
| 7 | 14 | |||
| 8 | 3 | 8 | 4 | |
| - | 2 | 0 | 7 | 9 |
| 5 |
Subtract the numbers in the tens column from the top number:
7-7=0
| Place value | thousands | hundreds | tens | ones |
| 7 | 14 | |||
| 8 | 3 | 8 | 4 | |
| - | 2 | 0 | 7 | 9 |
| 0 | 5 |
Subtract the numbers in the hundreds column from the top number:
3-0=3
| Place value | thousands | hundreds | tens | ones |
| 7 | 14 | |||
| 8 | 3 | 8 | 4 | |
| - | 2 | 0 | 7 | 9 |
| 3 | 0 | 5 |
Subtract the numbers in the thousands column from the top number:
8-2=6
| Place value | thousands | hundreds | tens | ones |
| 7 | 14 | |||
| 8 | 3 | 8 | 4 | |
| - | 2 | 0 | 7 | 9 |
| 6 | 3 | 0 | 5 |
The solution is: 6,305
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