| ( | x | + | ( | 2 | ÷ | 3 | × | x | ) | + | 1 10 | ) | ÷ | 5 | = | 20 100 |
| 方程左边 = | x | × | 1 5 | + | ( | 2 | ÷ | 3 | × | x | ) | × | 1 5 | + | 1 10 | × | 1 5 |
| = | x | × | 1 5 | + | ( | 2 | ÷ | 3 | × | x | ) | × | 1 5 | + | 1 50 |
| = | 1 5 | x | + | 2 | ÷ | 3 | × | x | × | 1 5 | + | 1 50 |
| = | 1 5 | x | + | 2 15 | x | + | 1 50 |
| = | 1 3 | x | + | 1 50 |
1 3 | x | + | 1 50 | = | 20 100 |
1 3 | x | = | 20 100 | − | 1 50 |
1 3 | x | = | 9 50 |
| x | = | 9 50 | ÷ | 1 3 |
| = | 9 50 | × | 3 |
| x | = | 27 50 |
| x | = | 0.54 |