| 100 | ÷ | ( | 1 | + | 1 10 | + | x | ) | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 30 | ÷ | ( | 1 | + | x | ) | = | 160 |
| 方程两边同时乘以: | ( | 1 | + | 1 10 | + | x | ) |
| 100 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | ( | 1 | + | 1 10 | + | x | ) | + | 30 | ÷ | ( | 1 | + | x | ) | × | ( | 1 | + | 1 10 | + | x | ) | = | 160 | ( | 1 | + | 1 10 | + | x | ) |
| 100 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | 1 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | 1 10 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | x | + | 30 | ÷ | ( | 1 | + | x | ) | = | 160 | ( | 1 | + | 1 10 | + | x | ) |
| 100 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | 1 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | 1 10 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | x | + | 30 | ÷ | ( | 1 | + | x | ) | = | 160 | × | 1 | + | 160 | × | 1 10 | + | 160 | x |
| 100 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 10 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | x | + | 30 | ÷ | ( | 1 | + | x | ) | × | ( | 1 | + | 1 10 | + | x | ) | = | 160 | + | 16 | + | 160 | x |
| 100 | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 10 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 100 | ÷ | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | × | x | + | 30 | ÷ | ( | 1 | + | x | ) | × | ( | 1 | + | 1 10 | + | x | ) | = | 176 | + | 160 | x |
| 方程两边同时乘以: | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) |
| 100 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 100 | + | 10 | + | 100 | x | + | 30 | ÷ | ( | 1 | + | x | ) | × | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 176 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) |
| 100 | × | 1 | + | 100 | × | 1 10 | + | 100 | × | 1 5 | + | 100 | x | + | 100 | + | 10 | + | 100 | x | = | 176 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) |
| 100 | × | 1 | + | 100 | × | 1 10 | + | 100 | × | 1 5 | + | 100 | x | + | 100 | + | 10 | + | 100 | x | = | 176 | × | 1 | + | 176 | × | 1 10 | + | 176 | × | 1 5 | + | 176 | x | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) |
| 100 | + | 10 | + | 20 | + | 100 | x | + | 100 | + | 10 | + | 100 | x | + | 30 | ÷ | ( | 1 | + | x | ) | × | ( | 1 | + | 1 10 | + | x | ) | = | 176 | + | 88 5 | + | 176 5 | + | 176 | x | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) |
| 240 | + | 200 | x | + | 30 | ÷ | ( | 1 | + | x | ) | × | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | + | 176 | x | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) |
| 方程两边同时乘以: | ( | 1 | + | x | ) |
| 240 | ( | 1 | + | x | ) | + | 200 | x | ( | 1 | + | x | ) | + | 30 | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | ( | 1 | + | x | ) | + | 176 | x | ( | 1 | + | x | ) | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | ( | 1 | + | x | ) |
| 240 | × | 1 | + | 240 | x | + | 200 | x | ( | 1 | + | x | ) | + | 30 | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | ( | 1 | + | x | ) | + | 176 | x | ( | 1 | + | x | ) | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | ( | 1 | + | x | ) |
| 240 | × | 1 | + | 240 | x | + | 200 | x | ( | 1 | + | x | ) | + | 30 | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | × | 1 | + | 1144 5 | x | + | 176 | x | ( | 1 | + | x | ) | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | ( | 1 | + | x | ) |
| 240 | + | 240 | x | + | 200 | x | ( | 1 | + | x | ) | + | 30 | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | + | 1144 5 | x | + | 176 | x | ( | 1 | + | x | ) | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | ( | 1 | + | x | ) |
| 240 | + | 240 | x | + | 200 | x | × | 1 | + | 200 | x | x | + | 30 | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | + | 1144 5 | x | + | 176 | x | ( | 1 | + | x | ) | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | ( | 1 | + | x | ) |
| 240 | + | 240 | x | + | 200 | x | × | 1 | + | 200 | x | x | + | 30 | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | + | 1144 5 | x | + | 176 | x | × | 1 | + | 176 | x | x | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) |
| 240 | + | 240 | x | + | 200 | x | + | 200 | x | x | + | 30 | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | + | 1144 5 | x | + | 176 | x | + | 176 | x | x | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | ( | 1 | + | x | ) |
| 240 | + | 440 | x | + | 200 | x | x | + | 30 | ( | 1 | + | 1 10 | + | x | ) | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | + | 2024 5 | x | + | 176 | x | x | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | ( | 1 | + | x | ) |
| 240 | + | 440 | x | + | 200 | x | x | + | 30 | × | 1 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 30 | × | 1 10 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | + | 2024 5 | x | + | 176 | x | x | + | 160 | x | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | ( | 1 | + | x | ) |
| 240 | + | 440 | x | + | 200 | x | x | + | 30 | × | 1 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 30 | × | 1 10 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | = | 1144 5 | + | 2024 5 | x | + | 176 | x | x | + | 160 | x | × | 1 | ( | 1 | + | x | ) | + | 160 | x |
| 240 | + | 440 | x | + | 200 | x | x | + | 30 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 3 | ( | 1 | + | 1 10 | + | 1 5 | + | x | ) | + | 30 | x | = | 1144 5 | + | 2024 5 | x | + | 176 | x | x | + | 160 | x | ( | 1 | + | x | ) | + | 16 | x | ( | 1 | + | x | ) |
| 240 | + | 440 | x | + | 200 | x | x | + | 30 | × | 1 | + | 30 | × | 1 10 | + | 30 | × | 1 5 | = | 1144 5 | + | 2024 5 | x | + | 176 | x | x | + | 160 | x | ( | 1 | + | x | ) | + | 16 | x | ( | 1 | + | x | ) |
| 240 | + | 440 | x | + | 200 | x | x | + | 30 | × | 1 | + | 30 | × | 1 10 | + | 30 | × | 1 5 | = | 1144 5 | + | 2024 5 | x | + | 176 | x | x | + | 160 | x | × | 1 | + | 160 | x | x |