| 1 | ÷ | ( | 1 | − | ( | 3 10 | + | 3 10 | + | x | ) | + | 3 10 | ÷ | 30 | + | 3 10 | ÷ | 20 | + | x | ÷ | 10 | ) | = | 10 |
| 方程两边同时乘以: | ( | 1 | − | ( | 3 10 | + | 3 10 | + | x | ) | + | 3 10 | ÷ | 30 | + | 3 10 | ÷ | 20 | + | x | ÷ | 10 | ) |
| 1 | = | 10 | ( | 1 | − | ( | 3 10 | + | 3 10 | + | x | ) | + | 3 10 | ÷ | 30 | + | 3 10 | ÷ | 20 | + | x | ÷ | 10 | ) |
| 1 | = | 10 | × | 1 | − | 10 | ( | 3 10 | + | 3 10 | + | x | ) | + | 10 | × | 3 10 | ÷ | 30 | + | 10 | × | 3 10 | ÷ | 20 | + | 10 | x |
| 1 | = | 10 | − | 10 | ( | 3 10 | + | 3 10 | + | x | ) | + | 1 10 | + | 3 20 | + | 1 | x |
| 1 | = | 41 4 | − | 10 | ( | 3 10 | + | 3 10 | + | x | ) | + | 1 | x |
| 1 | = | 41 4 | − | 10 | × | 3 10 | − | 10 | × | 3 10 | − | 10 | x | + | 1 | x |
| 1 | = | 41 4 | − | 3 | − | 3 | − | 10 | x | + | 1 | x |
| 1 | = | 17 4 | − | 9 | x |
| 9 | x | = | 17 4 | − | 1 |
| 9 | x | = | 13 4 |
| x | = | 13 4 | ÷ | 9 |
| = | 13 4 | × | 1 9 |
| x | = | 13 36 |
| x | = | 0.361111 |