| x | − | x | × | 3 50 | − | 1400000 | − | x | × | 3 50 | × | 1 10 | − | 36782 | − | ( | x | − | x | × | 3 50 | − | 1400000 | − | x | × | 3 50 | × | 1 10 | ) | × | 1 40 | = | 0 |
| 方程左边 = | x | − | x | × | 3 50 | − | 1400000 | − | x | × | 3 500 | − | 36782 | − | ( | x | − | x | × | 3 50 | − | 1400000 | − | x | × | 3 50 | × | 1 10 | ) | × | 1 40 |
| = | 467 500 | x | − | 1436782 | − | ( | x | − | x | × | 3 50 | − | 1400000 | − | x | × | 3 50 | × | 1 10 | ) | × | 1 40 |
467 500 | x | − | 1436782 | − | ( | x | − | x | × | 3 50 | − | 1400000 | − | x | × | 3 50 | × | 1 10 | ) | × | 1 40 | = | 0 |
| 方程左边 = | 467 500 | x | − | 1436782 | − | x | × | 1 40 | + | x | × | 3 50 | × | 1 40 | + | 1400000 | × | 1 40 | + | x | × | 3 50 |
| = | 467 500 | x | − | 1436782 | − | x | × | 1 40 | + | x | × | 3 2000 | + | 35000 | + | x | × | 3 20000 |
| = | 18213 20000 | x | − | 1401782 |
18213 20000 | x | − | 1401782 | = | 0 |
18213 20000 | x | = | 0 | + | 1401782 |
18213 20000 | x | = | 1401782 |
| x | = | 1401782 | ÷ | 18213 20000 |
| = | 1401782 | × | 20000 18213 |
| x | = | 28035640000 18213 |