| 6000 | ÷ | a | + | 10000 | ÷ | ( | a | + | 112 5 | ) | + | 10000 | ÷ | a | = | 150 |
| 方程两边同时乘以: | a |
| 6000 | + | 10000 | ÷ | ( | a | + | 112 5 | ) | × | a | + | 10000 | ÷ | 1 | × | 1 | = | 150 | a |
| 方程两边同时乘以: | ( | a | + | 112 5 | ) |
| 6000 | ( | a | + | 112 5 | ) | + | 10000 | a | + | 10000 | ÷ | 1 | × | 1 | ( | a | + | 112 5 | ) | = | 150 | a | ( | a | + | 112 5 | ) |
| 6000 | a | + | 6000 | × | 112 5 | + | 10000 | a | + | 10000 | ÷ | 1 | × | 1 | ( | a | + | 112 5 | ) | = | 150 | a | ( | a | + | 112 5 | ) |
| 6000 | a | + | 6000 | × | 112 5 | + | 10000 | a | + | 10000 | ÷ | 1 | × | 1 | ( | a | + | 112 5 | ) | = | 150 | a | a | + | 150 | a | × | 112 5 |
| 6000 | a | + | 134400 | + | 10000 | a | + | 10000 | ( | a | + | 112 5 | ) | = | 150 | a | a | + | 3360 | a |
| 16000 | a | + | 134400 | + | 10000 | ( | a | + | 112 5 | ) | = | 150 | a | a | + | 3360 | a |
| 16000 | a | + | 134400 | + | 10000 | a | + | 10000 | × | 112 5 | = | 150 | a | a | + | 3360 | a |
| 16000 | a | + | 134400 | + | 10000 | a | + | 224000 | = | 150 | a | a | + | 3360 | a |
| 26000 | a | + | 358400 | = | 150 | a | a | + | 3360 | a |