21 5 | × | 14000 | ( | 94 | − | x | ) | = | 1216 | × | 453 10 | ( | x | − | 88 | ) | ÷ | 2 | × | 18 5 |
| 方程左边 = | 58800 | ( | 94 | − | x | ) |
| 58800 | ( | 94 | − | x | ) | = | 1216 | × | 453 10 | ( | x | − | 88 | ) | ÷ | 2 | × | 18 5 |
| 方程左边 = | 58800 | × | 94 | − | 58800 | x |
| = | 5527200 | − | 58800 | x |
| 5527200 | − | 58800 | x | = | 1216 | × | 453 10 | ( | x | − | 88 | ) | ÷ | 2 | × | 18 5 |
| 方程右边 = | 2478816 25 | ( | x | − | 88 | ) |
| 5527200 | − | 58800 | x | = | 2478816 25 | ( | x | − | 88 | ) |
| 方程右边 = | 2478816 25 | x | − | 2478816 25 | × | 88 |
| = | 2478816 25 | x | − | 218135808 25 |
| 5527200 | − | 58800 | x | = | 2478816 25 | x | − | 218135808 25 |
| - | 58800 | x | − | 2478816 25 | x | = | - | 218135808 25 | − | 5527200 |
| - | 3948816 25 | x | = | - | 218135808 25 | − | 5527200 |
| - | 3948816 25 | x | = | - | 356315808 25 |
356315808 25 | = | 3948816 25 | x |
3948816 25 | x | = | 356315808 25 |
| x | = | 356315808 25 | ÷ | 3948816 25 |
| = | 356315808 25 | × | 25 3948816 |
| = | 7423246 | × | 1 82267 |
| x | = | 7423246 82267 |
| x | = | 90.233581 |