| ( | x | − | 150 | ) | ÷ | 3300 | = | x | − | 525 2 | ÷ | 3000 |
| 方程左边 = | x | × | 1 3300 | − | 150 | × | 1 3300 |
| = | x | × | 1 3300 | − | 1 22 |
1 3300 | x | − | 1 22 | = | x | − | 525 2 | ÷ | 3000 |
| 方程右边 = | x | − | 7 80 |
1 3300 | x | − | 1 22 | = | x | − | 7 80 |
1 3300 | x | − | x | = | - | 7 80 | + | 1 22 |
| - | 3299 3300 | x | = | - | 7 80 | + | 1 22 |
| - | 3299 3300 | x | = | - | 37 880 |
37 880 | = | 3299 3300 | x |
3299 3300 | x | = | 37 880 |
| x | = | 37 880 | ÷ | 3299 3300 |
| = | 37 880 | × | 3300 3299 |
| = | 37 4 | × | 15 3299 |
| x | = | 555 13196 |
| x | = | 0.042058 |