| 250 | × | 16 5 | × | 26 5 | ÷ | ( | 16 5 | + | 23 20 | x | ) | ÷ | ( | 26 5 | + | 23 20 | x | ) | = | 100 |
| 方程两边同时乘以: | ( | 16 5 | + | 23 20 | x | ) |
| 250 | × | 16 5 | × | 26 5 | ÷ | ( | 26 5 | + | 23 20 | x | ) | = | 100 | ( | 16 5 | + | 23 20 | x | ) |
| 250 | × | 16 5 | × | 26 5 | ÷ | ( | 26 5 | + | 23 20 | x | ) | = | 100 | × | 16 5 | + | 100 | × | 23 20 | x |
| 4160 | ÷ | ( | 26 5 | + | 23 20 | x | ) | = | 320 | + | 115 | x |
| 方程两边同时乘以: | ( | 26 5 | + | 23 20 | x | ) |
| 4160 | = | 320 | ( | 26 5 | + | 23 20 | x | ) | + | 115 | x | ( | 26 5 | + | 23 20 | x | ) |
| 4160 | = | 320 | × | 26 5 | + | 320 | × | 23 20 | x | + | 115 | x | ( | 26 5 | + | 23 20 | x | ) |
| 4160 | = | 1664 | + | 368 | x | + | 115 | x | ( | 26 5 | + | 23 20 | x | ) |
| 4160 | = | 1664 | + | 368 | x | + | 115 | x | × | 26 5 | + | 115 | x | × | 23 20 | x |
| 4160 | = | 1664 | + | 368 | x | + | 598 | x | + | 529 4 | x | x |
| 4160 | = | 1664 | + | 966 | x | + | 529 4 | x | x |