| ( | ( | 100 | − | m | ) | ÷ | 10 | × | 6 | + | ( | 100 | − | m | ) | ÷ | 15 | × | 6 | ) | + | m | ÷ | 6 | = | ( | 100 | − | m | ) | ÷ | 10 | × | 2 | + | m | ÷ | 2 |
| 方程左边 = | ( | 100 | − | m | ) | ÷ | 10 | × | 6 | + | ( | 100 | − | m | ) | ÷ | 15 | × | 6 | + | 1 6 | m |
| = | ( | 100 | − | m | ) | × | 3 5 | + | ( | 100 | − | m | ) | × | 2 5 | + | 1 6 | m |
| = | 100 | × | 3 5 | − | m | × | 3 5 | + | ( | 100 | − | m | ) | × | 2 5 | + | 1 6 | m |
| = | 60 | − | m | × | 3 5 | + | ( | 100 | − | m | ) | × | 2 5 | + | 1 6 | m |
| = | 60 | − | 13 30 | m | + | ( | 100 | − | m | ) | × | 2 5 |
| = | 60 | − | 13 30 | m | + | 100 | × | 2 5 | − | m | × | 2 5 |
| = | 60 | − | 13 30 | m | + | 40 | − | m | × | 2 5 |
| = | 100 | − | 5 6 | m |
| 100 | − | 5 6 | m | = | ( | 100 | − | m | ) | ÷ | 10 | × | 2 | + | m | ÷ | 2 |
| 方程右边 = | ( | 100 | − | m | ) | × | 1 5 | + | m | × | 1 2 |
| 100 | − | 5 6 | m | = | ( | 100 | − | m | ) | × | 1 5 | + | 1 2 | m |
| 方程右边 = | 100 | × | 1 5 | − | m | × | 1 5 | + | 1 2 | m |
| = | 20 | − | m | × | 1 5 | + | 1 2 | m |
| = | 20 | + | 3 10 | m |
| 100 | − | 5 6 | m | = | 20 | + | 3 10 | m |
| - | 5 6 | m | − | 3 10 | m | = | 20 | − | 100 |
| - | 17 15 | m | = | 20 | − | 100 |
| - | 17 15 | m | = | - | 80 |
| 80 | = | 17 15 | m |
17 15 | m | = | 80 |
| m | = | 80 | ÷ | 17 15 |
| = | 80 | × | 15 17 |
| m | = | 1200 17 |
| m | = | 70.588235 |