| 80 | ( | 1 | − | ( | ( | x | − | 1 | ) | ÷ | 57 | ) | ( | 1 | − | 147 50 | ÷ | 191 50 | ) | ) | = | 3597 50 |
| 方程左边 = | 80 | × | 1 | − | 80 | ( | ( | x | − | 1 | ) | ÷ | 57 | ) | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 80 | ( | ( | x | − | 1 | ) | ÷ | 57 | ) | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 80 | ( | x | − | 1 | ) | ÷ | 57 | × | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 80 57 | ( | x | − | 1 | ) | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 80 57 | x | ( | 1 | − | 147 50 | ÷ | 191 50 | ) | + | 80 57 | × | 1 | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 80 57 | x | ( | 1 | − | 147 50 | ÷ | 191 50 | ) | + | 80 57 | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 80 57 | x | × | 1 | + | 80 57 | x | × | 147 50 | ÷ | 191 50 | + | 80 57 | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 80 57 | x | + | 3920 3629 | x | + | 80 57 | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 3520 10887 | x | + | 80 57 | ( | 1 | − | 147 50 | ÷ | 191 50 | ) |
| = | 80 | − | 3520 10887 | x | + | 80 57 | × | 1 | − | 80 57 | × | 147 50 | ÷ | 191 50 |
| = | 80 | − | 3520 10887 | x | + | 80 57 | − | 3920 3629 |
| = | 874480 10887 | − | 3520 10887 | x |
874480 10887 | − | 3520 10887 | x | = | 3597 50 |
| - | 3520 10887 | x | = | 3597 50 | − | 874480 10887 |
| - | 3520 10887 | x | = | - | 4563461 544350 |
4563461 544350 | = | 3520 10887 | x |
3520 10887 | x | = | 4563461 544350 |
| x | = | 4563461 544350 | ÷ | 3520 10887 |
| = | 4563461 544350 | × | 10887 3520 |
| = | 4563461 9550 | × | 191 3520 |
| x | = | 871621051 33616000 |
| x | = | 4563461 176000 |
| x | = | 25.928756 |