| 9 | ( | 1 | − | x | ) | ÷ | 9 | = | 4 | x | ÷ | ( | 24 | + | 4 | + | 48 | ) |
| 方程两边同时乘以: | ( | 24 | + | 4 | + | 48 | ) |
| 9 | ( | 1 | − | x | ) | ÷ | 9 | × | ( | 24 | + | 4 | + | 48 | ) | = | 4 | x |
| 9 | × | 1 | ÷ | 9 | × | ( | 24 | + | 4 | + | 48 | ) | − | 9 | x | ÷ | 9 | × | ( | 24 | + | 4 | + | 48 | ) | = | 4 | x |
| 1 | ( | 24 | + | 4 | + | 48 | ) | − | 1 | x | ( | 24 | + | 4 | + | 48 | ) | = | 4 | x |
| 1 | × | 24 | + | 1 | × | 4 | + | 1 | × | 48 | − | 1 | x | ( | 24 | + | 4 | + | 48 | ) | = | 4 | x |
| 24 | + | 4 | + | 48 | − | 1 | x | ( | 24 | + | 4 | + | 48 | ) | = | 4 | x |
| 76 | − | 1 | x | ( | 24 | + | 4 | + | 48 | ) | = | 4 | x |
| 76 | − | 1 | x | × | 24 | − | 1 | x | × | 4 | − | 1 | x | × | 48 | = | 4 | x |
| 76 | − | 24 | x | − | 4 | x | − | 48 | x | = | 4 | x |
| 76 | − | 76 | x | = | 4 | x |
| - | 76 | x | − | 4 | x | = | - | 76 |
| - | 80 | x | = | - | 76 |
| 76 | = | 80 | x |
| 80 | x | = | 76 |
| x | = | 76 | ÷ | 80 |
| = | 76 | × | 1 80 |
| = | 19 | × | 1 20 |
| x | = | 19 20 |
| x | = | 0.95 |