| ( | 15 | − | x | ) | ÷ | 33 10 | = | ( | x | − | 1 2 | − | 21 5 | ) | ÷ | 4 | + | ( | x | − | 7 5 | ) | ÷ | 333 100 |
| 方程左边 = | 15 | × | 10 33 | − | x | × | 10 33 |
| = | 50 11 | − | x | × | 10 33 |
50 11 | − | 10 33 | x | = | ( | x | − | 1 2 | − | 21 5 | ) | ÷ | 4 | + | ( | x | − | 7 5 | ) | ÷ | 333 100 |
| 方程右边 = | x | × | 1 4 | − | 1 2 | × | 1 4 | − | 21 5 | × | 1 4 | + | ( | x | − | 7 5 | ) | × | 100 333 |
| = | x | × | 1 4 | − | 1 8 | − | 21 20 | + | ( | x | − | 7 5 | ) | × | 100 333 |
| = | 1 4 | x | − | 47 40 | + | ( | x | − | 7 5 | ) | × | 100 333 |
| = | 1 4 | x | − | 47 40 | + | x | × | 100 333 | − | 7 5 | × | 100 333 |
| = | 1 4 | x | − | 47 40 | + | x | × | 100 333 | − | 140 333 |
| = | 733 1332 | x | − | 21251 13320 |
50 11 | − | 10 33 | x | = | 733 1332 | x | − | 21251 13320 |
| - | 10 33 | x | − | 733 1332 | x | = | - | 21251 13320 | − | 50 11 |
| - | 12503 14652 | x | = | - | 21251 13320 | − | 50 11 |
| - | 12503 14652 | x | = | - | 899761 146520 |
899761 146520 | = | 12503 14652 | x |
12503 14652 | x | = | 899761 146520 |
| x | = | 899761 146520 | ÷ | 12503 14652 |
| = | 899761 146520 | × | 14652 12503 |
| = | 899761 10 | × | 1 12503 |
| x | = | 899761 125030 |
| x | = | 7.196361 |