| ( | x | − | 3 50 | ) | ÷ | ( | 2 25 | − | 3 50 | ) | = | ( | 900 | − | 280103 250 | ) | ÷ | ( | 897949 1000 | − | 280103 250 | ) |
| 方程两边同时乘以: | ( | 2 25 | − | 3 50 | ) | , | ( | 897949 1000 | − | 280103 250 | ) |
| ( | x | − | 3 50 | ) | ( | 897949 1000 | − | 280103 250 | ) | = | ( | 900 | − | 280103 250 | ) | ( | 2 25 | − | 3 50 | ) |
| x | ( | 897949 1000 | − | 280103 250 | ) | − | 3 50 | ( | 897949 1000 | − | 280103 250 | ) | = | ( | 900 | − | 280103 250 | ) | ( | 2 25 | − | 3 50 | ) |
| x | ( | 897949 1000 | − | 280103 250 | ) | − | 3 50 | ( | 897949 1000 | − | 280103 250 | ) | = | 900 | ( | 2 25 | − | 3 50 | ) | − | 280103 250 | ( | 2 25 | − | 3 50 | ) |
| x | × | 897949 1000 | − | x | × | 280103 250 | − | 3 50 | ( | 897949 1000 | − | 280103 250 | ) | = | 900 | ( | 2 25 | − | 3 50 | ) | − | 280103 250 | ( | 2 25 | − | 3 50 | ) |
| x | × | 897949 1000 | − | x | × | 280103 250 | − | 3 50 | ( | 897949 1000 | − | 280103 250 | ) | = | 900 | × | 2 25 | − | 900 | × | 3 50 | − | 280103 250 | ( | 2 25 | − | 3 50 | ) |
| x | × | 897949 1000 | − | x | × | 280103 250 | − | 3 50 | ( | 897949 1000 | − | 280103 250 | ) | = | 72 | − | 54 | − | 280103 250 | ( | 2 25 | − | 3 50 | ) |
| - | 222463 1000 | x | − | 3 50 | ( | 897949 1000 | − | 280103 250 | ) | = | 18 | − | 280103 250 | ( | 2 25 | − | 3 50 | ) |
| - | 222463 1000 | x | − | 3 50 | × | 897949 1000 | + | 3 50 | × | 280103 250 | = | 18 | − | 280103 250 | ( | 2 25 | − | 3 50 | ) |
| - | 222463 1000 | x | − | 3 50 | × | 897949 1000 | + | 3 50 | × | 280103 250 | = | 18 | − | 280103 250 | × | 2 25 | + | 280103 250 | × | 3 50 |
| - | 222463 1000 | x | − | 2693847 50000 | + | 840309 12500 | = | 18 | − | 280103 3125 | + | 840309 12500 |
| - | 222463 1000 | x | + | 667389 50000 | = | - | 55103 12500 |
| - | 222463 1000 | x | = | - | 55103 12500 | − | 667389 50000 |