| ( | x | × | 40 100 | × | 70 | + | x | × | 60 100 | × | 30 | + | 400 | × | 3 2 | × | 40 100 | × | 40 | + | 400 | × | 3 2 | ) | ( | 1 | − | 10 100 | ) | − | 20286 | = | 10000 |
| 方程左边 = | x | × | 40 100 | × | 70 | ( | 1 | − | 10 100 | ) | + | x | × | 60 100 | × | 30 | ( | 1 | − | 10 100 | ) | + | 400 | × | 3 2 | × | 40 100 | × | 40 |
| = | x | × | 28 | ( | 1 | − | 10 100 | ) | + | x | × | 18 | ( | 1 | − | 10 100 | ) | + | 9600 | ( | 1 | − | 10 100 | ) | + | 7200 | ( | 1 | − | 10 100 | ) | − | 20286 |
| = | x | × | 28 | × | 1 | − | x | × | 28 | × | 10 100 | + | x | × | 18 | ( | 1 | − | 10 100 | ) | + | 9600 | ( | 1 | − | 10 100 | ) | + | 7200 |
| = | x | × | 28 | − | x | × | 14 5 | + | x | × | 18 | ( | 1 | − | 10 100 | ) | + | 9600 | ( | 1 | − | 10 100 | ) | + | 7200 | ( | 1 | − | 10 100 | ) | − | 20286 |
| = | 126 5 | x | + | x | × | 18 | ( | 1 | − | 10 100 | ) | + | 9600 | ( | 1 | − | 10 100 | ) | + | 7200 | ( | 1 | − | 10 100 | ) | − | 20286 |
| = | 126 5 | x | + | x | × | 18 | × | 1 | − | x | × | 18 | × | 10 100 | + | 9600 | ( | 1 | − | 10 100 | ) | + | 7200 | ( | 1 | − | 10 100 | ) |
| = | 126 5 | x | + | x | × | 18 | − | x | × | 9 5 | + | 9600 | ( | 1 | − | 10 100 | ) | + | 7200 | ( | 1 | − | 10 100 | ) | − | 20286 |
| = | 207 5 | x | + | 9600 | ( | 1 | − | 10 100 | ) | + | 7200 | ( | 1 | − | 10 100 | ) | − | 20286 |
| = | 207 5 | x | + | 9600 | × | 1 | − | 9600 | × | 10 100 | + | 7200 | ( | 1 | − | 10 100 | ) | − | 20286 |
| = | 207 5 | x | + | 9600 | − | 960 | + | 7200 | ( | 1 | − | 10 100 | ) | − | 20286 |
| = | 207 5 | x | − | 11646 | + | 7200 | ( | 1 | − | 10 100 | ) |
| = | 207 5 | x | − | 11646 | + | 7200 | × | 1 | − | 7200 | × | 10 100 |
| = | 207 5 | x | − | 11646 | + | 7200 | − | 720 |
| = | 207 5 | x | − | 5166 |
207 5 | x | − | 5166 | = | 10000 |
207 5 | x | = | 10000 | + | 5166 |
207 5 | x | = | 15166 |
| x | = | 15166 | ÷ | 207 5 |
| = | 15166 | × | 5 207 |
| x | = | 75830 207 |
| x | = | 366.328502 |