| 1447 | × | 3 | ( | 1 | + | 16 | x | ÷ | ( | x | + | 2000 | ) | ) | × | 9 10 | = | 30000 |
| 1447 | × | 3 | × | 1 | × | 9 10 | + | 1447 | × | 3 | × | 16 | x | ÷ | ( | x | + | 2000 | ) | × | 9 10 | = | 30000 |
39069 10 | + | 312552 5 | x | ÷ | ( | x | + | 2000 | ) | = | 30000 |
| 方程两边同时乘以: | ( | x | + | 2000 | ) |
39069 10 | ( | x | + | 2000 | ) | + | 312552 5 | x | = | 30000 | ( | x | + | 2000 | ) |
39069 10 | x | + | 39069 10 | × | 2000 | + | 312552 5 | x | = | 30000 | ( | x | + | 2000 | ) |
39069 10 | x | + | 39069 10 | × | 2000 | + | 312552 5 | x | = | 30000 | x | + | 30000 | × | 2000 |
39069 10 | x | + | 7813800 | + | 312552 5 | x | = | 30000 | x | + | 60000000 |
664173 10 | x | + | 7813800 | = | 30000 | x | + | 60000000 |
664173 10 | x | − | 30000 | x | = | 60000000 | − | 7813800 |
364173 10 | x | = | 60000000 | − | 7813800 |
364173 10 | x | = | 52186200 |
| x | = | 52186200 | ÷ | 364173 10 |
| = | 52186200 | × | 10 364173 |
| = | 17395400 | × | 10 121391 |
| x | = | 173954000 121391 |
| x | = | 1433.005742 |