| ( | 1 5 | × | 1089 500 | + | 5 | x | ) | ÷ | ( | 1089 500 | + | x | ) | − | 3 10 | = | 0 |
| 方程两边同时乘以: | ( | 1089 500 | + | x | ) |
| ( | 1 5 | × | 1089 500 | + | 5 | x | ) | − | 3 10 | ( | 1089 500 | + | x | ) | = | 0 |
1 5 | × | 1089 500 | + | 5 | x | − | 3 10 | ( | 1089 500 | + | x | ) | = | 0 |
1089 2500 | + | 5 | x | − | 3 10 | ( | 1089 500 | + | x | ) | = | 0 |
1089 2500 | + | 5 | x | − | 3 10 | × | 1089 500 | − | 3 10 | x | = | 0 |
1089 2500 | + | 5 | x | − | 3267 5000 | − | 3 10 | x | = | 0 |
| - | 1089 5000 | + | 47 10 | x | = | 0 |
47 10 | x | = | 0 | + | 1089 5000 |
47 10 | x | = | 1089 5000 |
| x | = | 1089 5000 | ÷ | 47 10 |
| = | 1089 5000 | × | 10 47 |
| = | 1089 500 | × | 1 47 |
| x | = | 1089 23500 |
| x | = | 0.04634 |