Solution - Long subtraction
140
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| 1 | 4 | 7 | |
| - | 7 | ||
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
7-7=0
| Place value | hundreds | tens | ones |
| 1 | 4 | 7 | |
| - | 7 | ||
| 0 |
Write 4 in the tens place.
| Place value | hundreds | tens | ones |
| 1 | 4 | 7 | |
| - | 7 | ||
| 4 | 0 |
Write 1 in the hundreds place.
| Place value | hundreds | tens | ones |
| 1 | 4 | 7 | |
| - | 7 | ||
| 1 | 4 | 0 |
The solution is: 140
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