| ( | x | − | 2997 25 | ) | × | 10 | − | 3 5 | − | 3 5 | = | 2 |
| 方程左边 = | ( | x | − | 2997 25 | ) | × | 10 | − | 6 5 |
| ( | x | − | 2997 25 | ) | × | 10 | − | 6 5 | = | 2 |
| 方程左边 = | x | × | 10 | − | 2997 25 | × | 10 | − | 6 5 |
| = | x | × | 10 | − | 5994 5 | − | 6 5 |
| = | 10 | x | − | 1200 |
| 10 | x | − | 1200 | = | 2 |
| 10 | x | = | 2 | + | 1200 |
| 10 | x | = | 1202 |
| x | = | 1202 | ÷ | 10 |
| = | 1202 | × | 1 10 |
| = | 601 | × | 1 5 |
| x | = | 601 5 |
| x | = | 120.2 |