| ( | 7 | x | − | 1 | ) | ÷ | 3 125 | = | ( | 1 | − | 2 | x | ) | ÷ | 9 500 | − | ( | 5 | x | + | 1 | ) | ÷ | 3 250 |
| 方程左边 = | 7 | x | × | 125 3 | − | 1 | × | 125 3 |
| = | 875 3 | x | − | 125 3 |
875 3 | x | − | 125 3 | = | ( | 1 | − | 2 | x | ) | ÷ | 9 500 | − | ( | 5 | x | + | 1 | ) | ÷ | 3 250 |
| 方程右边 = | 1 | × | 500 9 | − | 2 | x | × | 500 9 | − | ( | 5 | x | + | 1 | ) | × | 250 3 |
| = | 500 9 | − | 1000 9 | x | − | ( | 5 | x | + | 1 | ) | × | 250 3 |
| = | 500 9 | − | 1000 9 | x | − | 5 | x | × | 250 3 | − | 1 | × | 250 3 |
| = | 500 9 | − | 1000 9 | x | − | 1250 3 | x | − | 250 3 |
| = | - | 250 9 | − | 4750 9 | x |
875 3 | x | − | 125 3 | = | - | 250 9 | − | 4750 9 | x |
875 3 | x | + | 4750 9 | x | = | - | 250 9 | + | 125 3 |
7375 9 | x | = | - | 250 9 | + | 125 3 |
7375 9 | x | = | 125 9 |
| x | = | 125 9 | ÷ | 7375 9 |
| = | 125 9 | × | 9 7375 |
| = | 1 | × | 1 59 |
| x | = | 1 59 |
| x | = | 0.016949 |