| ( | 98 | − | x | − | 48 | ) | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | = | 10800 |
| 98 | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | − | x | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | − | 48 | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | = | 10800 |
| 98 | × | 5 | ÷ | x | × | 50 | + | 98 | × | 160 | − | x | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | − | 48 | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | = | 10800 |
| 24500 | ÷ | x | + | 15680 | − | x | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | − | 48 | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | = | 10800 |
| 方程两边同时乘以: | x |
| 24500 | + | 15680 | x | − | x | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | x | − | 48 | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | x | = | 10800 | x |
| 24500 | + | 15680 | x | − | x | × | 5 | ÷ | x | × | 50 | x | − | x | × | 160 | x | − | 48 | = | 10800 | x |
| 24500 | + | 15680 | x | − | x | × | 250 | ÷ | x | × | x | − | x | × | 160 | x | − | 48 | ( | 5 | ÷ | x | × | 50 | + | 160 | ) | = | 10800 | x |
| 24500 | + | 15680 | x | − | 1 | × | 250 | ÷ | 1 | × | x | − | x | × | 160 | x | − | 48 | × | 5 | = | 10800 | x |
| 24500 | + | 15680 | x | − | 250 | x | − | x | × | 160 | x | − | 12000 | ÷ | x | × | x | − | 7680 | = | 10800 | x |
| 24500 | + | 7750 | x | − | x | × | 160 | x | − | 12000 | ÷ | x | × | x | = | 10800 | x |