| ( | x | + | 2 | ) | ÷ | 4 | − | ( | 1 | − | 2 | x | ) | ÷ | 12 | = | 1 |
| 方程左边 = | x | × | 1 4 | + | 2 | × | 1 4 | − | ( | 1 | − | 2 | x | ) | × | 1 12 |
| = | x | × | 1 4 | + | 1 2 | − | ( | 1 | − | 2 | x | ) | × | 1 12 |
| = | 1 4 | x | + | 1 2 | − | 1 | × | 1 12 | + | 2 | x | × | 1 12 |
| = | 1 4 | x | + | 1 2 | − | 1 12 | + | 1 6 | x |
| = | 5 12 | x | + | 5 12 |
5 12 | x | + | 5 12 | = | 1 |
5 12 | x | = | 1 | − | 5 12 |
5 12 | x | = | 7 12 |
| x | = | 7 12 | ÷ | 5 12 |
| = | 7 12 | × | 12 5 |
| = | 7 | × | 1 5 |
| x | = | 7 5 |
| x | = | 1.4 |