| ( | 40 | ÷ | x | + | 17 2 | ) | ÷ | ( | 50 | ÷ | x | + | 34 5 | ) | = | 507 1000 | ÷ | 493 1000 |
| 方程两边同时乘以: | ( | 50 | ÷ | x | + | 34 5 | ) |
| ( | 40 | ÷ | x | + | 17 2 | ) | = | 507 1000 | ÷ | 493 1000 | × | ( | 50 | ÷ | x | + | 34 5 | ) |
| 40 | ÷ | x | + | 17 2 | = | 507 1000 | ÷ | 493 1000 | × | ( | 50 | ÷ | x | + | 34 5 | ) |
| 40 | ÷ | x | + | 17 2 | = | 507 1000 | ÷ | 493 1000 | × | 50 | ÷ | x | + | 507 1000 | ÷ | 493 1000 | × | 34 5 |
| 40 | ÷ | x | + | 17 2 | = | 25350 493 | ÷ | x | + | 1014 145 |
| 方程两边同时乘以: | x |
| 40 | + | 17 2 | x | = | 25350 493 | ÷ | 1 | × | 1 | + | 1014 145 | x |
17 2 | x | − | 1014 145 | x | = | 25350 493 | ÷ | 1 | × | 1 | − | 40 |
17 2 | x | − | 1014 145 | x | = | 25350 493 | − | 40 |
437 290 | x | = | 25350 493 | − | 40 |
437 290 | x | = | 5630 493 |
| x | = | 5630 493 | ÷ | 437 290 |
| = | 5630 493 | × | 290 437 |
| x | = | 1632700 215441 |
| x | = | 56300 7429 |
| x | = | 7.578409 |