| x | × | 49843 500 | × | 21 5 | − | ( | 100 | − | x | ) | × | 291 50 | × | 21 5 | = | 119 50 | × | 291 50 | × | 1000 |
| 方程左边 = | x | × | 1046703 2500 | − | ( | 100 | − | x | ) | × | 6111 250 |
1046703 2500 | x | − | ( | 100 | − | x | ) | × | 6111 250 | = | 119 50 | × | 291 50 | × | 1000 |
| 方程左边 = | 1046703 2500 | x | − | 100 | × | 6111 250 | + | x | × | 6111 250 |
| = | 1046703 2500 | x | − | 12222 5 | + | x | × | 6111 250 |
| = | 1107813 2500 | x | − | 12222 5 |
1107813 2500 | x | − | 12222 5 | = | 119 50 | × | 291 50 | × | 1000 |
| 方程右边 = | 69258 5 |
1107813 2500 | x | − | 12222 5 | = | 69258 5 |
1107813 2500 | x | = | 69258 5 | + | 12222 5 |
1107813 2500 | x | = | 16296 |
| x | = | 16296 | ÷ | 1107813 2500 |
| = | 16296 | × | 2500 1107813 |
| = | 776 | × | 2500 52753 |
| x | = | 1940000 52753 |
| x | = | 36.77516 |