| ( | x | ÷ | 2650 | ) | + | ( | ( | x | ÷ | 9 25 | ) | − | 1 | ) | ÷ | 2700 | = | 31 100 |
| 方程左边 = | x | ÷ | 2650 | + | ( | ( | x | ÷ | 9 25 | ) | − | 1 | ) | × | 1 2700 |
| = | 1 2650 | x | + | ( | x | ÷ | 9 25 | ) | × | 1 2700 | − | 1 | × | 1 2700 |
| = | 1 2650 | x | + | ( | x | ÷ | 9 25 | ) | × | 1 2700 | − | 1 2700 |
| = | 1 2650 | x | + | x | ÷ | 9 25 | × | 1 2700 | − | 1 2700 |
| = | 1 2650 | x | + | x | × | 1 972 | − | 1 2700 |
| = | 1811 1287900 | x | − | 1 2700 |
1811 1287900 | x | − | 1 2700 | = | 31 100 |
1811 1287900 | x | = | 31 100 | + | 1 2700 |
1811 1287900 | x | = | 419 1350 |
| x | = | 419 1350 | ÷ | 1811 1287900 |
| = | 419 1350 | × | 1287900 1811 |
| = | 419 | × | 954 1811 |
| x | = | 399726 1811 |
| x | = | 220.721149 |