| ( | 3 | y | − | 1 | ) | ÷ | 4 | − | 1 | = | ( | 2 | y | + | 7 | ) | ÷ | 6 |
| 方程左边 = | 3 | y | × | 1 4 | − | 1 | × | 1 4 | − | 1 |
| = | 3 4 | y | − | 1 4 | − | 1 |
| = | 3 4 | y | − | 5 4 |
3 4 | y | − | 5 4 | = | ( | 2 | y | + | 7 | ) | ÷ | 6 |
| 方程右边 = | 2 | y | × | 1 6 | + | 7 | × | 1 6 |
| = | 1 3 | y | + | 7 6 |
3 4 | y | − | 5 4 | = | 1 3 | y | + | 7 6 |
3 4 | y | − | 1 3 | y | = | 7 6 | + | 5 4 |
5 12 | y | = | 7 6 | + | 5 4 |
5 12 | y | = | 29 12 |
| y | = | 29 12 | ÷ | 5 12 |
| = | 29 12 | × | 12 5 |
| = | 29 | × | 1 5 |
| y | = | 29 5 |
| y | = | 5.8 |