| 3 |
| 55 |
| 40 |
| 81 |
| -1957 |
| 4455 |
| 3 |
| 55 |
| 40 |
| 81 |
In order to make fractions have the same denominator, multiply the numerator and denominator of each fraction by the denominator of the other
| 3 x 81 |
| 55 x 81 |
| 40 x 55 |
| 81 x 55 |
| 243 |
| 4455 |
| 2200 |
| 4455 |
| 243 - 2200 |
| 4455 |
| -1957 |
| 4455 |
OR
| (3 x 81) - (40 x 55) |
| 55 x 81 |
| -1957 |
| 4455 |
| -1957 |
| 4455 |
Positive Fractions
| -1 |
| -2 |
| 1 |
| -2 |
| -1 |
| 2 |
| 1 |
| 2 |
Negative Fractions
| -1 |
| 2 |
| 1 |
| -2 |
| -1 |
| -2 |
| 1 |
| 2 |