| ( | 5 | × | 45 | + | 1 | × | 5 | ) | ÷ | ( | 50 | + | x | ) | = | 47 10 |
| 方程两边同时乘以: | ( | 50 | + | x | ) |
| ( | 5 | × | 45 | + | 1 | × | 5 | ) | = | 47 10 | ( | 50 | + | x | ) |
| 5 | × | 45 | + | 1 | × | 5 | = | 47 10 | ( | 50 | + | x | ) |
| 5 | × | 45 | + | 1 | × | 5 | = | 47 10 | × | 50 | + | 47 10 | x |
| 225 | + | 5 | = | 235 | + | 47 10 | x |
| 230 | = | 235 | + | 47 10 | x |
| - | 47 10 | x | = | 235 | − | 230 |
| - | 47 10 | x | = | 5 |
| - | 5 | = | 47 10 | x |
47 10 | x | = | - | 5 |
| x | = | - | 5 | ÷ | 47 10 |
| = | - | 5 | × | 10 47 |
| x | = | - | 50 47 |
| x | = | - 1.06383 |