| ( | 2 | y | − | 1 | ) | ÷ | 3 | − | 1 | = | - | ( | y | + | 2 | ) | ÷ | 4 |
| 方程左边 = | 2 | y | × | 1 3 | − | 1 | × | 1 3 | − | 1 |
| = | 2 3 | y | − | 1 3 | − | 1 |
| = | 2 3 | y | − | 4 3 |
2 3 | y | − | 4 3 | = | - | ( | y | + | 2 | ) | ÷ | 4 |
| 方程右边 = | - | y | × | 1 4 | − | 2 | × | 1 4 |
| = | - | y | × | 1 4 | − | 1 2 |
2 3 | y | − | 4 3 | = | - | 1 4 | y | − | 1 2 |
2 3 | y | + | 1 4 | y | = | - | 1 2 | + | 4 3 |
11 12 | y | = | - | 1 2 | + | 4 3 |
11 12 | y | = | 5 6 |
| y | = | 5 6 | ÷ | 11 12 |
| = | 5 6 | × | 12 11 |
| = | 5 | × | 2 11 |
| y | = | 10 11 |
| y | = | 0.909091 |