Solution - Long subtraction
1.8
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths |
| 8 | . | 6 | 7 | |
| - | 6 | . | 8 | 7 |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
7-7=0
| Place value | ones | . | tenths | hundredths |
| 8 | . | 6 | 7 | |
| - | 6 | . | 8 | 7 |
| . | 0 |
Because the upper digit (6) in the tenths 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 (16).
| Place value | ones | . | tenths | hundredths |
| 7 | 16 | |||
| 8 | . | 6 | 7 | |
| - | 6 | . | 8 | 7 |
| . | 0 |
Subtract the numbers in the tenths column from the top number:
16-8=8
| Place value | ones | . | tenths | hundredths |
| 7 | 16 | |||
| 8 | . | 6 | 7 | |
| - | 6 | . | 8 | 7 |
| . | 8 | 0 |
Subtract the numbers in the ones column from the top number:
7-6=1
| Place value | ones | . | tenths | hundredths |
| 7 | 16 | |||
| 8 | . | 6 | 7 | |
| - | 6 | . | 8 | 7 |
| 1 | . | 8 | 0 |
The solution is: 1.8
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