| x | = | 1989 25 | + | 243 20 | + | 1 | + | ( | x | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 | + | x | ÷ | 109 100 | × | 12 100 |
| 方程右边 = | 1989 25 | + | 243 20 | + | 1 | + | ( | x | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 | + | x | × | 12 109 |
| = | 9271 100 | + | ( | x | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 | + | 12 109 | x |
| x | = | 9271 100 | + | ( | x | ÷ | 109 100 | × | 9 100 | ) | × | 28 25 | + | 12 109 | x |
| 方程右边 = | 9271 100 | + | x | ÷ | 109 100 | × | 9 100 | × | 28 25 | + | 12 109 | x |
| = | 9271 100 | + | x | × | 252 2725 | + | 12 109 | x |
| = | 9271 100 | + | 552 2725 | x |
| x | = | 9271 100 | + | 552 2725 | x |
| x | − | 552 2725 | x | = | 9271 100 |
2173 2725 | x | = | 9271 100 |
| x | = | 9271 100 | ÷ | 2173 2725 |
| = | 9271 100 | × | 2725 2173 |
| = | 9271 4 | × | 109 2173 |
| x | = | 1010539 8692 |
| x | = | 116.260815 |