| ( | x | + | 1 10 | ) | ÷ | 120 | + | x | ÷ | 100 | = | 36 |
| 方程左边 = | x | × | 1 120 | + | 1 10 | × | 1 120 | + | 1 100 | x |
| = | x | × | 1 120 | + | 1 1200 | + | 1 100 | x |
| = | 11 600 | x | + | 1 1200 |
11 600 | x | + | 1 1200 | = | 36 |
11 600 | x | = | 36 | − | 1 1200 |
11 600 | x | = | 43199 1200 |
| x | = | 43199 1200 | ÷ | 11 600 |
| = | 43199 1200 | × | 600 11 |
| = | 43199 2 | × | 1 11 |
| x | = | 43199 22 |
| x | = | 1963.590909 |