Solution - Long subtraction
7.3
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths |
| 1 | 3 | . | 7 | |
| 1 | . | 9 | ||
| - | 4 | . | 5 | |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (7) in the tenths column is too small to get a positive difference, borrow 1 from the digit (3) in the next number place which becomes (2) and get (17).
| Place value | tens | ones | . | tenths |
| 2 | 17 | |||
| 1 | 3 | . | 7 | |
| 1 | . | 9 | ||
| - | 4 | . | 5 | |
| . |
Subtract the numbers in the tenths column from the top number:
17-9-5=3
| Place value | tens | ones | . | tenths |
| 2 | 17 | |||
| 1 | 3 | . | 7 | |
| 1 | . | 9 | ||
| - | 4 | . | 5 | |
| . | 3 |
Because the upper digit (2) in the ones column is too small to get a positive difference, borrow 1 from the digit (1) in the next number place which becomes (0) and get (12).
| Place value | tens | ones | . | tenths |
| 0 | 12 | |||
| 2 | 17 | |||
| 1 | 3 | . | 7 | |
| 1 | . | 9 | ||
| - | 4 | . | 5 | |
| . | 3 |
Subtract the numbers in the ones column from the top number:
12-1-4=7
| Place value | tens | ones | . | tenths |
| 0 | 12 | |||
| 2 | 17 | |||
| 1 | 3 | . | 7 | |
| 1 | . | 9 | ||
| - | 4 | . | 5 | |
| 7 | . | 3 |
Write 0 in the tens place.
| Place value | tens | ones | . | tenths |
| 0 | 12 | |||
| 2 | 17 | |||
| 1 | 3 | . | 7 | |
| 1 | . | 9 | ||
| - | 4 | . | 5 | |
| 0 | 7 | . | 3 |
The solution is: 7.3
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