893 100 | ( | x | − | 20 | ) | = | 170 | − | x |
| 方程左边 = | 893 100 | x | − | 893 100 | × | 20 |
| = | 893 100 | x | − | 893 5 |
893 100 | x | − | 893 5 | = | 170 | − | x |
893 100 | x | + | x | = | 170 | + | 893 5 |
993 100 | x | = | 170 | + | 893 5 |
993 100 | x | = | 1743 5 |
| x | = | 1743 5 | ÷ | 993 100 |
| = | 1743 5 | × | 100 993 |
| = | 581 | × | 20 331 |
| x | = | 11620 331 |
| x | = | 35.10574 |