| ( | x | × | 27 5 | + | 10391 1000 | × | 800 | ) | ÷ | ( | x | + | 800 | ) | = | 19 2 |
| 方程两边同时乘以: | ( | x | + | 800 | ) |
| ( | x | × | 27 5 | + | 10391 1000 | × | 800 | ) | = | 19 2 | ( | x | + | 800 | ) |
| x | × | 27 5 | + | 10391 1000 | × | 800 | = | 19 2 | ( | x | + | 800 | ) |
| x | × | 27 5 | + | 10391 1000 | × | 800 | = | 19 2 | x | + | 19 2 | × | 800 |
| x | × | 27 5 | + | 41564 5 | = | 19 2 | x | + | 7600 |
27 5 | x | − | 19 2 | x | = | 7600 | − | 41564 5 |
| - | 41 10 | x | = | 7600 | − | 41564 5 |
| - | 41 10 | x | = | - | 3564 5 |
3564 5 | = | 41 10 | x |
41 10 | x | = | 3564 5 |
| x | = | 3564 5 | ÷ | 41 10 |
| = | 3564 5 | × | 10 41 |
| = | 3564 | × | 2 41 |
| x | = | 7128 41 |
| x | = | 173.853659 |