| ( | x | − | 26 | ) | ÷ | 6 | + | 30 | ÷ | 9 2 | + | ( | x | − | 4 | ) | ÷ | 15 2 | = | ( | x | − | 4 | ) | ÷ | 5 | + | 30 | ÷ | 25 4 | + | ( | x | − | 26 | ) | ÷ | 15 4 |
| 方程左边 = | ( | x | − | 26 | ) | × | 1 6 | + | 20 3 | + | ( | x | − | 4 | ) | × | 2 15 |
| ( | x | − | 26 | ) | × | 1 6 | + | 20 3 | + | ( | x | − | 4 | ) | × | 2 15 | = | ( | x | − | 4 | ) | ÷ | 5 | + | 30 | ÷ | 25 4 | + | ( | x | − | 26 | ) | ÷ | 15 4 |
| 方程左边 = | x | × | 1 6 | − | 26 | × | 1 6 | + | 20 3 | + | ( | x | − | 4 | ) | × | 2 15 |
| = | x | × | 1 6 | − | 13 3 | + | 20 3 | + | ( | x | − | 4 | ) | × | 2 15 |
| = | 1 6 | x | + | 7 3 | + | ( | x | − | 4 | ) | × | 2 15 |
| = | 1 6 | x | + | 7 3 | + | x | × | 2 15 | − | 4 | × | 2 15 |
| = | 1 6 | x | + | 7 3 | + | x | × | 2 15 | − | 8 15 |
| = | 3 10 | x | + | 9 5 |
3 10 | x | + | 9 5 | = | ( | x | − | 4 | ) | ÷ | 5 | + | 30 | ÷ | 25 4 | + | ( | x | − | 26 | ) | ÷ | 15 4 |
| 方程右边 = | ( | x | − | 4 | ) | × | 1 5 | + | 24 5 | + | ( | x | − | 26 | ) | × | 4 15 |
3 10 | x | + | 9 5 | = | ( | x | − | 4 | ) | × | 1 5 | + | 24 5 | + | ( | x | − | 26 | ) | × | 4 15 |
| 方程右边 = | x | × | 1 5 | − | 4 | × | 1 5 | + | 24 5 | + | ( | x | − | 26 | ) | × | 4 15 |
| = | x | × | 1 5 | − | 4 5 | + | 24 5 | + | ( | x | − | 26 | ) | × | 4 15 |
| = | 1 5 | x | + | 4 | + | ( | x | − | 26 | ) | × | 4 15 |
| = | 1 5 | x | + | 4 | + | x | × | 4 15 | − | 26 | × | 4 15 |
| = | 1 5 | x | + | 4 | + | x | × | 4 15 | − | 104 15 |
| = | 7 15 | x | − | 44 15 |
3 10 | x | + | 9 5 | = | 7 15 | x | − | 44 15 |
3 10 | x | − | 7 15 | x | = | - | 44 15 | − | 9 5 |
| - | 1 6 | x | = | - | 44 15 | − | 9 5 |
| - | 1 6 | x | = | - | 71 15 |
71 15 | = | 1 6 | x |
1 6 | x | = | 71 15 |
| x | = | 71 15 | ÷ | 1 6 |
| = | 71 15 | × | 6 |
| = | 71 5 | × | 2 |
| x | = | 142 5 |
| x | = | 28.4 |