| 10000 | + | 16000 | ( | 1 | + | x | ) | × | 3 80 | × | 1603 2500 | = | 10000 | ( | 1 | + | x | ) |
| 方程左边 = | 10000 | + | 9618 25 | ( | 1 | + | x | ) |
| 10000 | + | 9618 25 | ( | 1 | + | x | ) | = | 10000 | ( | 1 | + | x | ) |
| 方程左边 = | 10000 | + | 9618 25 | × | 1 | + | 9618 25 | x |
| = | 10000 | + | 9618 25 | + | 9618 25 | x |
| = | 259618 25 | + | 9618 25 | x |
259618 25 | + | 9618 25 | x | = | 10000 | ( | 1 | + | x | ) |
| 方程右边 = | 10000 | × | 1 | + | 10000 | x |
| = | 10000 | + | 10000 | x |
259618 25 | + | 9618 25 | x | = | 10000 | + | 10000 | x |
9618 25 | x | − | 10000 | x | = | 10000 | − | 259618 25 |
| - | 240382 25 | x | = | 10000 | − | 259618 25 |
| - | 240382 25 | x | = | - | 9618 25 |
9618 25 | = | 240382 25 | x |
240382 25 | x | = | 9618 25 |
| x | = | 9618 25 | ÷ | 240382 25 |
| = | 9618 25 | × | 25 240382 |
| = | 4809 | × | 1 120191 |
| x | = | 4809 120191 |
| x | = | 0.040011 |