| 1455 | x | + | 2220 | ( | 1 | − | x | ) | = | 1645 |
| 方程左边 = | 1455 | x | + | 2220 | × | 1 | − | 2220 | x |
| = | 1455 | x | + | 2220 | − | 2220 | x |
| = | - | 765 | x | + | 2220 |
| - | 765 | x | + | 2220 | = | 1645 |
| - | 765 | x | = | 1645 | − | 2220 |
| - | 765 | x | = | - | 575 |
| 575 | = | 765 | x |
| 765 | x | = | 575 |
| x | = | 575 | ÷ | 765 |
| = | 575 | × | 1 765 |
| = | 115 | × | 1 153 |
| x | = | 115 153 |
| x | = | 0.751634 |