Solution - Long subtraction
72
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones |
| 7 | 4 | |
| - | 2 | |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the ones column from the top number:
4-2=2
| Place value | tens | ones |
| 7 | 4 | |
| - | 2 | |
| 2 |
Write 7 in the tens place.
| Place value | tens | ones |
| 7 | 4 | |
| - | 2 | |
| 7 | 2 |
The solution is: 72
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