162 5 | ÷ | ( | 4 | x | ) | − | 9 | ÷ | ( | 2 | x | ) | = | 9 10 |
| 方程两边同时乘以: | ( | 4 | x | ) |
162 5 | − | 9 | ÷ | ( | 2 | × | 1 | ) | × | ( | 4 | × | 1 | ) | = | 9 10 | ( | 4 | x | ) |
162 5 | − | 9 | ÷ | ( | 2 | × | 1 | ) | × | 4 | × | 1 | = | 9 10 | ( | 4 | x | ) |
162 5 | − | 9 | ÷ | ( | 2 | × | 1 | ) | × | 4 | × | 1 | = | 9 10 | × | 4 | x |
162 5 | − | 36 | ÷ | ( | 2 | × | 1 | ) | = | 18 5 | x |
| 方程两边同时乘以: | ( | 2 | × | 1 | ) |
162 5 | ( | 2 | × | 1 | ) | − | 36 | = | 18 5 | x | ( | 2 | × | 1 | ) |
162 5 | × | 2 | × | 1 | − | 36 | = | 18 5 | x | ( | 2 | × | 1 | ) |
162 5 | × | 2 | × | 1 | − | 36 | = | 18 5 | x | × | 2 | × | 1 |
324 5 | − | 36 | = | 36 5 | x |
144 5 | = | 36 5 | x |
| - | 36 5 | x | = | - | 144 5 |
144 5 | = | 36 5 | x |
36 5 | x | = | 144 5 |
| x | = | 144 5 | ÷ | 36 5 |
| = | 144 5 | × | 5 36 |
| = | 4 | × | 1 |
| x | = | 4 |