| ( | 8 | + | x | ) | x | × | 15 2 | − | 18 | ÷ | ( | 8 | + | x | ) | × | x | × | 55 2 | = | 1 4 |
| 方程两边同时乘以: | ( | 8 | + | x | ) |
| ( | 8 | + | x | ) | x | × | 15 2 | ( | 8 | + | x | ) | − | 18 | x | × | 55 2 | = | 1 4 | ( | 8 | + | x | ) |
| 8 | x | × | 15 2 | ( | 8 | + | x | ) | + | x | x | × | 15 2 | ( | 8 | + | x | ) | − | 18 | x | × | 55 2 | = | 1 4 | ( | 8 | + | x | ) |
| 8 | x | × | 15 2 | ( | 8 | + | x | ) | + | x | x | × | 15 2 | ( | 8 | + | x | ) | − | 18 | x | × | 55 2 | = | 1 4 | × | 8 | + | 1 4 | x |
| 60 | x | ( | 8 | + | x | ) | + | x | x | × | 15 2 | ( | 8 | + | x | ) | − | 495 | x | = | 2 | + | 1 4 | x |
| 60 | x | × | 8 | + | 60 | x | x | + | x | x | × | 15 2 | ( | 8 | + | x | ) | − | 495 | x | = | 2 | + | 1 4 | x |
| 480 | x | + | 60 | x | x | + | x | x | × | 15 2 | ( | 8 | + | x | ) | − | 495 | x | = | 2 | + | 1 4 | x |
| - | 15 | x | + | 60 | x | x | + | x | x | × | 15 2 | ( | 8 | + | x | ) | = | 2 | + | 1 4 | x |
| - | 15 | x | + | 60 | x | x | + | x | x | × | 15 2 | × | 8 | + | x | x | × | 15 2 | = | 2 | + | 1 4 | x |
| - | 15 | x | + | 60 | x | x | + | x | x | × | 60 | + | x | x | × | 15 2 | x | = | 2 | + | 1 4 | x |