| 500000 | = | M | ÷ | ( | 1 | + | 10 100 | ) | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 2 |
| 方程两边同时乘以: | ( | 1 | + | 10 100 | ) |
| 500000 | ( | 1 | + | 10 100 | ) | = | M | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 2 | ( | 1 | + | 10 100 | ) |
| 500000 | × | 1 | + | 500000 | × | 10 100 | = | M | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 2 | ( | 1 | + | 10 100 | ) |
| 500000 | × | 1 | + | 500000 | × | 10 100 | = | M | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 2 | × | 1 | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 2 | × | 10 100 |
| 500000 | + | 50000 | = | M | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 2 | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 1 5 |
| 550000 | = | M | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 2 | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 1 5 |
| 方程两边同时乘以: | ( | 1 | + | 10 100 | ) |
| 550000 | ( | 1 | + | 10 100 | ) | = | M | ( | 1 | + | 10 100 | ) | + | M | × | 2 | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 550000 | × | 1 | + | 550000 | × | 10 100 | = | M | ( | 1 | + | 10 100 | ) | + | M | × | 2 | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 550000 | × | 1 | + | 550000 | × | 10 100 | = | M | × | 1 | + | M | × | 10 100 | + | M | × | 2 | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 550000 | + | 55000 | = | M | × | 1 | + | M | × | 10 100 | + | M | × | 2 | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 605000 | = | 31 10 | M | + | M | ÷ | ( | 1 | + | 10 100 | ) | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 方程两边同时乘以: | ( | 1 | + | 10 100 | ) |
| 605000 | ( | 1 | + | 10 100 | ) | = | 31 10 | M | ( | 1 | + | 10 100 | ) | + | M | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 605000 | × | 1 | + | 605000 | × | 10 100 | = | 31 10 | M | ( | 1 | + | 10 100 | ) | + | M | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 605000 | × | 1 | + | 605000 | × | 10 100 | = | 31 10 | M | × | 1 | + | 31 10 | M | × | 10 100 | + | M | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 605000 | + | 60500 | = | 31 10 | M | + | 31 100 | M | + | M | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 665500 | = | 341 100 | M | + | M | × | 1 5 | ( | 1 | + | 10 100 | ) |
| 665500 | = | 341 100 | M | + | M | × | 1 5 | × | 1 | + | M | × | 1 5 | × | 10 100 |
| 665500 | = | 341 100 | M | + | M | × | 1 5 | + | M | × | 1 50 |
| 665500 | = | 363 100 | M |
| - | 363 100 | M | = | - | 665500 |
| 665500 | = | 363 100 | M |
363 100 | M | = | 665500 |
| M | = | 665500 | ÷ | 363 100 |
| = | 665500 | × | 100 363 |
| = | 5500 | × | 100 3 |
| M | = | 550000 3 |
| M | = | 183333.333333 |