| - | 7 | x | ÷ | 3 | + | 4 | ÷ | 3 | = | 247 100 | x | ÷ | ( | 1 | + | 147 100 | x | ) |
| 方程两边同时乘以: | ( | 1 | + | 147 100 | x | ) |
| - | 7 | x | ÷ | 3 | × | ( | 1 | + | 147 100 | x | ) | + | 4 | ÷ | 3 | × | ( | 1 | + | 147 100 | x | ) | = | 247 100 | x |
| - | 7 | x | ÷ | 3 | × | 1 | − | 7 | x | ÷ | 3 | × | 147 100 | x | + | 4 | ÷ | 3 | × | ( | 1 | + | 147 100 | x | ) | = | 247 100 | x |
| - | 7 3 | x | − | 343 100 | x | x | + | 4 3 | ( | 1 | + | 147 100 | x | ) | = | 247 100 | x |
| - | 7 3 | x | − | 343 100 | x | x | + | 4 3 | × | 1 | + | 4 3 | × | 147 100 | x | = | 247 100 | x |
| - | 7 3 | x | − | 343 100 | x | x | + | 4 3 | + | 49 25 | x | = | 247 100 | x |
| - | 28 75 | x | − | 343 100 | x | x | + | 4 3 | = | 247 100 | x |