| ( | 40 | ÷ | X | + | 17 2 | ) | = | ( | 50 | ÷ | X | + | 34 5 | ) |
| 40 | ÷ | X | + | 17 2 | = | ( | 50 | ÷ | X | + | 34 5 | ) |
| 40 | ÷ | X | + | 17 2 | = | 50 | ÷ | X | + | 34 5 |
| 方程两边同时乘以: | X |
| 40 | + | 17 2 | X | = | 50 | ÷ | 1 | × | 1 | + | 34 5 | X |
17 2 | X | − | 34 5 | X | = | 50 | ÷ | 1 | × | 1 | − | 40 |
17 2 | X | − | 34 5 | X | = | 50 | − | 40 |
17 10 | X | = | 50 | − | 40 |
17 10 | X | = | 10 |
| X | = | 10 | ÷ | 17 10 |
| = | 10 | × | 10 17 |
| X | = | 100 17 |
| X | = | 5.882353 |