| x | − | x | ÷ | ( | 109 100 | × | 3 100 | ) | = | 319266067 100 |
| 方程两边同时乘以: | ( | 109 100 | × | 3 100 | ) |
| x | ( | 109 100 | × | 3 100 | ) | − | x | = | 319266067 100 | ( | 109 100 | × | 3 100 | ) |
| x | × | 109 100 | × | 3 100 | − | x | = | 319266067 100 | ( | 109 100 | × | 3 100 | ) |
| x | × | 109 100 | × | 3 100 | − | x | = | 319266067 100 | × | 109 100 | × | 3 100 |