| x | ÷ | ( | 4919 2500 | − | x | ) | × | 3 10 | = | 18 25 |
| 方程两边同时乘以: | ( | 4919 2500 | − | x | ) |
| x | × | 3 10 | = | 18 25 | ( | 4919 2500 | − | x | ) |
| x | × | 3 10 | = | 18 25 | × | 4919 2500 | − | 18 25 | x |
| x | × | 3 10 | = | 44271 31250 | − | 18 25 | x |
3 10 | x | + | 18 25 | x | = | 44271 31250 |
51 50 | x | = | 44271 31250 |
| x | = | 44271 31250 | ÷ | 51 50 |
| = | 44271 31250 | × | 50 51 |
| = | 14757 625 | × | 1 17 |
| x | = | 14757 10625 |
| x | = | 1.388894 |