| ( | x | − | 300 | ) | × | 1 | ÷ | 22 | = | 3778 |
| 方程左边 = | ( | x | − | 300 | ) | × | 1 22 |
| ( | x | − | 300 | ) | × | 1 22 | = | 3778 |
| 方程左边 = | x | × | 1 22 | − | 300 | × | 1 22 |
| = | x | × | 1 22 | − | 150 11 |
1 22 | x | − | 150 11 | = | 3778 |
1 22 | x | = | 3778 | + | 150 11 |
1 22 | x | = | 41708 11 |
| x | = | 41708 11 | ÷ | 1 22 |
| = | 41708 11 | × | 22 |
| = | 41708 | × | 2 |
| x | = | 83416 |