| x | ( | 100 | ÷ | ( | 4157 500 | × | 375 | ) | + | x | ) | = | 12 5 | ( | 38 5 | ÷ | 135 | − | x | ) |
| x | × | 100 | ÷ | ( | 4157 500 | × | 375 | ) | + | x | x | = | 12 5 | ( | 38 5 | ÷ | 135 | − | x | ) |
| x | × | 100 | ÷ | ( | 4157 500 | × | 375 | ) | + | x | x | = | 12 5 | × | 38 5 | ÷ | 135 | − | 12 5 | x |
| x | × | 100 | ÷ | ( | 4157 500 | × | 375 | ) | + | x | x | = | 152 1125 | − | 12 5 | x |
| 方程两边同时乘以: | ( | 4157 500 | × | 375 | ) |
| x | × | 100 | + | x | x | ( | 4157 500 | × | 375 | ) | = | 152 1125 | ( | 4157 500 | × | 375 | ) | − | 12 5 | x | ( | 4157 500 | × | 375 | ) |
| x | × | 100 | + | x | x | × | 4157 500 | × | 375 | = | 152 1125 | ( | 4157 500 | × | 375 | ) | − | 12 5 | x | ( | 4157 500 | × | 375 | ) |
| x | × | 100 | + | x | x | × | 4157 500 | × | 375 | = | 152 1125 | × | 4157 500 | × | 375 | − | 12 5 | x | ( | 4157 500 | × | 375 | ) |
| x | × | 100 | + | x | x | × | 12471 4 | = | 157966 375 | − | 12 5 | x | ( | 4157 500 | × | 375 | ) |
| 100 | x | + | x | x | × | 12471 4 | = | 157966 375 | − | 12 5 | x | × | 4157 500 | × | 375 |
| 100 | x | + | x | x | × | 12471 4 | = | 157966 375 | − | 37413 5 | x |