| ( | 5500 | × | 12 | × | 9 10 | − | 7 10 | × | 145 | x | × | 8 125 | ) | ÷ | ( | 3 10 | × | 145 | x | + | 1 20 | × | 145 | x | ) | = | 353 10000 |
| 方程两边同时乘以: | ( | 3 10 | × | 145 | x | + | 1 20 | × | 145 | x | ) |
| ( | 5500 | × | 12 | × | 9 10 | − | 7 10 | × | 145 | x | × | 8 125 | ) | = | 353 10000 | ( | 3 10 | × | 145 | x | + | 1 20 | × | 145 | x | ) |
| 5500 | × | 12 | × | 9 10 | − | 7 10 | × | 145 | x | × | 8 125 | = | 353 10000 | ( | 3 10 | × | 145 | x | + | 1 20 | × | 145 | x | ) |
| 5500 | × | 12 | × | 9 10 | − | 7 10 | × | 145 | x | × | 8 125 | = | 353 10000 | × | 3 10 | × | 145 | x | + | 353 10000 | × | 1 20 | × | 145 | x |
| 59400 | − | 812 125 | x | = | 30711 20000 | x | + | 10237 40000 | x |
| 59400 | − | 812 125 | x | = | 71659 40000 | x |
| - | 812 125 | x | − | 71659 40000 | x | = | - | 59400 |
| - | 331499 40000 | x | = | - | 59400 |
| 59400 | = | 331499 40000 | x |
331499 40000 | x | = | 59400 |
| x | = | 59400 | ÷ | 331499 40000 |
| = | 59400 | × | 40000 331499 |
| x | = | 2376000000 331499 |
| x | = | 7167.442436 |