| x | ( | 1 | − | 921 2500 | ) | + | 145 2 | × | 921 2500 | = | 84 |
| 方程左边 = | x | ( | 1 | − | 921 2500 | ) | + | 26709 1000 |
| x | ( | 1 | − | 921 2500 | ) | + | 26709 1000 | = | 84 |
| 方程左边 = | x | × | 1 | − | x | × | 921 2500 | + | 26709 1000 |
| = | 1579 2500 | x | + | 26709 1000 |
1579 2500 | x | + | 26709 1000 | = | 84 |
1579 2500 | x | = | 84 | − | 26709 1000 |
1579 2500 | x | = | 57291 1000 |
| x | = | 57291 1000 | ÷ | 1579 2500 |
| = | 57291 1000 | × | 2500 1579 |
| = | 57291 2 | × | 5 1579 |
| x | = | 286455 3158 |
| x | = | 90.707726 |