78 5 | x | + | 43 10 | ( | 1 | − | x | ) | = | 46 5 |
| 方程左边 = | 78 5 | x | + | 43 10 | × | 1 | − | 43 10 | x |
| = | 78 5 | x | + | 43 10 | − | 43 10 | x |
| = | 113 10 | x | + | 43 10 |
113 10 | x | + | 43 10 | = | 46 5 |
113 10 | x | = | 46 5 | − | 43 10 |
113 10 | x | = | 49 10 |
| x | = | 49 10 | ÷ | 113 10 |
| = | 49 10 | × | 10 113 |
| = | 49 | × | 1 113 |
| x | = | 49 113 |
| x | = | 0.433628 |