54 500 | = | ( | 4 5 | ( | 1 | + | x | ) | ) | ÷ | ( | 10 | + | x | ) |
| 方程两边同时乘以: | ( | 10 | + | x | ) |
54 500 | ( | 10 | + | x | ) | = | ( | 4 5 | ( | 1 | + | x | ) | ) |
54 500 | × | 10 | + | 54 500 | x | = | ( | 4 5 | ( | 1 | + | x | ) | ) |
54 500 | × | 10 | + | 54 500 | x | = | 4 5 | ( | 1 | + | x | ) |
27 25 | + | 54 500 | x | = | 4 5 | ( | 1 | + | x | ) |
27 25 | + | 54 500 | x | = | 4 5 | × | 1 | + | 4 5 | x |
27 25 | + | 54 500 | x | = | 4 5 | + | 4 5 | x |
54 500 | x | − | 4 5 | x | = | 4 5 | − | 27 25 |
| - | 173 250 | x | = | 4 5 | − | 27 25 |
| - | 173 250 | x | = | - | 7 25 |
7 25 | = | 173 250 | x |
173 250 | x | = | 7 25 |
| x | = | 7 25 | ÷ | 173 250 |
| = | 7 25 | × | 250 173 |
| = | 7 | × | 10 173 |
| x | = | 70 173 |
| x | = | 0.404624 |