417 500 | = | 5 2 | ( | ( | 2 | − | x | ) | ÷ | ( | 4 | + | x | ) | ) |
417 500 | = | 5 2 | ( | 2 | − | x | ) | ÷ | ( | 4 | + | x | ) |
| 方程两边同时乘以: | ( | 4 | + | x | ) |
417 500 | ( | 4 | + | x | ) | = | 5 2 | ( | 2 | − | x | ) |
417 500 | × | 4 | + | 417 500 | x | = | 5 2 | ( | 2 | − | x | ) |
417 500 | × | 4 | + | 417 500 | x | = | 5 2 | × | 2 | − | 5 2 | x |
417 125 | + | 417 500 | x | = | 5 | − | 5 2 | x |
417 500 | x | + | 5 2 | x | = | 5 | − | 417 125 |
1667 500 | x | = | 5 | − | 417 125 |
1667 500 | x | = | 208 125 |
| x | = | 208 125 | ÷ | 1667 500 |
| = | 208 125 | × | 500 1667 |
| = | 208 | × | 4 1667 |
| x | = | 832 1667 |
| x | = | 0.4991 |