| ( | i | − | 10 100 | ) | ÷ | ( | 12 100 | − | 10 100 | ) | = | ( | 5 | − | 53349 10000 | ) | ÷ | ( | 12419 2500 | − | 53349 10000 | ) |
| 方程两边同时乘以: | ( | 12 100 | − | 10 100 | ) | , | ( | 12419 2500 | − | 53349 10000 | ) |
| ( | i | − | 10 100 | ) | ( | 12419 2500 | − | 53349 10000 | ) | = | ( | 5 | − | 53349 10000 | ) | ( | 12 100 | − | 10 100 | ) |
| i | ( | 12419 2500 | − | 53349 10000 | ) | − | 10 100 | ( | 12419 2500 | − | 53349 10000 | ) | = | ( | 5 | − | 53349 10000 | ) | ( | 12 100 | − | 10 100 | ) |
| i | ( | 12419 2500 | − | 53349 10000 | ) | − | 10 100 | ( | 12419 2500 | − | 53349 10000 | ) | = | 5 | ( | 12 100 | − | 10 100 | ) | − | 53349 10000 | ( | 12 100 | − | 10 100 | ) |
| i | × | 12419 2500 | − | i | × | 53349 10000 | − | 10 100 | ( | 12419 2500 | − | 53349 10000 | ) | = | 5 | ( | 12 100 | − | 10 100 | ) | − | 53349 10000 | ( | 12 100 | − | 10 100 | ) |
| i | × | 12419 2500 | − | i | × | 53349 10000 | − | 10 100 | ( | 12419 2500 | − | 53349 10000 | ) | = | 5 | × | 12 100 | − | 5 | × | 10 100 | − | 53349 10000 | ( | 12 100 | − | 10 100 | ) |
| i | × | 12419 2500 | − | i | × | 53349 10000 | − | 10 100 | ( | 12419 2500 | − | 53349 10000 | ) | = | 3 5 | − | 1 2 | − | 53349 10000 | ( | 12 100 | − | 10 100 | ) |
| - | 3673 10000 | i | − | 10 100 | ( | 12419 2500 | − | 53349 10000 | ) | = | 1 10 | − | 53349 10000 | ( | 12 100 | − | 10 100 | ) |
| - | 3673 10000 | i | − | 10 100 | × | 12419 2500 | + | 10 100 | × | 53349 10000 | = | 1 10 | − | 53349 10000 | ( | 12 100 | − | 10 100 | ) |
| - | 3673 10000 | i | − | 10 100 | × | 12419 2500 | + | 10 100 | × | 53349 10000 | = | 1 10 | − | 53349 10000 | × | 12 100 | + | 53349 10000 | × | 10 100 |
| - | 3673 10000 | i | − | 12419 25000 | + | 53349 100000 | = | 1 10 | − | 160047 250000 | + | 53349 100000 |