| x | ÷ | 9 10 | + | ( | 36363420 | + | 1081 | x | ) | ÷ | ( | 70753 | − | 2 | x | ) | = | 215 |
| 方程两边同时乘以: | ( | 70753 | − | 2 | x | ) |
| x | ÷ | 9 10 | × | ( | 70753 | − | 2 | x | ) | + | ( | 36363420 | + | 1081 | x | ) | = | 215 | ( | 70753 | − | 2 | x | ) |
| x | ÷ | 9 10 | × | 70753 | − | x | ÷ | 9 10 | × | 2 | x | + | ( | 36363420 | + | 1081 | x | ) | = | 215 | ( | 70753 | − | 2 | x | ) |
| x | ÷ | 9 10 | × | 70753 | − | x | ÷ | 9 10 | × | 2 | x | + | ( | 36363420 | + | 1081 | x | ) | = | 215 | × | 70753 | − | 215 | × | 2 | x |
| x | × | 707530 9 | − | x | × | 20 9 | x | + | ( | 36363420 | + | 1081 | x | ) | = | 15211895 | − | 430 | x |
707530 9 | x | − | x | × | 20 9 | x | + | 36363420 | + | 1081 | x | = | 15211895 | − | 430 | x |
717259 9 | x | − | x | × | 20 9 | x | + | 36363420 | = | 15211895 | − | 430 | x |