| ( | 36 | ( | 1 | + | 15 100 | ) | ) | + | ( | 3 100 | x | ) | = | x |
| 方程左边 = | 36 | ( | 1 | + | 15 100 | ) | + | ( | 3 100 | x | ) |
| = | 36 | × | 1 | + | 36 | × | 15 100 | + | ( | 3 100 | x | ) |
| = | 36 | + | 27 5 | + | ( | 3 100 | x | ) |
| = | 207 5 | + | ( | 3 100 | x | ) |
| = | 207 5 | + | 3 100 | x |
207 5 | + | 3 100 | x | = | x |
3 100 | x | − | x | = | - | 207 5 |
| - | 97 100 | x | = | - | 207 5 |
207 5 | = | 97 100 | x |
97 100 | x | = | 207 5 |
| x | = | 207 5 | ÷ | 97 100 |
| = | 207 5 | × | 100 97 |
| = | 207 | × | 20 97 |
| x | = | 4140 97 |
| x | = | 42.680412 |