| i | − | 7 100 | ÷ | 8 100 | − | 7 100 | = | ( | 26087 10000 | − | 26243 10000 | ) | ÷ | ( | 25771 10000 | − | 26243 10000 | ) |
| 方程两边同时乘以: | ( | 25771 10000 | − | 26243 10000 | ) |
| i | ( | 25771 10000 | − | 26243 10000 | ) | − | 7 100 | ÷ | 8 100 | × | ( | 25771 10000 | − | 26243 10000 | ) | − | 7 100 | ( | 25771 10000 | − | 26243 10000 | ) | = | ( | 26087 10000 | − | 26243 10000 | ) |
| i | × | 25771 10000 | − | i | × | 26243 10000 | − | 7 100 | ÷ | 8 100 | × | ( | 25771 10000 | − | 26243 10000 | ) | − | 7 100 | ( | 25771 10000 | − | 26243 10000 | ) | = | ( | 26087 10000 | − | 26243 10000 | ) |
| i | × | 25771 10000 | − | i | × | 26243 10000 | − | 7 100 | ÷ | 8 100 | × | ( | 25771 10000 | − | 26243 10000 | ) | − | 7 100 | ( | 25771 10000 | − | 26243 10000 | ) | = | 26087 10000 | − | 26243 10000 |
| i | × | 25771 10000 | − | i | × | 26243 10000 | − | 7 8 | ( | 25771 10000 | − | 26243 10000 | ) | − | 7 100 | ( | 25771 10000 | − | 26243 10000 | ) | = | 26087 10000 | − | 26243 10000 |
| - | 59 1250 | i | − | 7 8 | ( | 25771 10000 | − | 26243 10000 | ) | − | 7 100 | ( | 25771 10000 | − | 26243 10000 | ) | = | - | 39 2500 |
| - | 59 1250 | i | − | 7 8 | × | 25771 10000 | + | 7 8 | × | 26243 10000 | − | 7 100 | ( | 25771 10000 | − | 26243 10000 | ) | = | - | 39 2500 |
| - | 59 1250 | i | − | 180397 80000 | + | 183701 80000 | − | 7 100 | ( | 25771 10000 | − | 26243 10000 | ) | = | - | 39 2500 |
| - | 59 1250 | i | + | 413 10000 | − | 7 100 | ( | 25771 10000 | − | 26243 10000 | ) | = | - | 39 2500 |
| - | 59 1250 | i | + | 413 10000 | − | 7 100 | × | 25771 10000 | + | 7 100 | × | 26243 10000 | = | - | 39 2500 |
| - | 59 1250 | i | + | 413 10000 | − | 180397 1000000 | + | 183701 1000000 | = | - | 39 2500 |
| - | 59 1250 | i | + | 11151 250000 | = | - | 39 2500 |
| - | 59 1250 | i | = | - | 39 2500 | − | 11151 250000 |
| - | 59 1250 | i | = | - | 15051 250000 |
15051 250000 | = | 59 1250 | i |
59 1250 | i | = | 15051 250000 |
| i | = | 15051 250000 | ÷ | 59 1250 |
| = | 15051 250000 | × | 1250 59 |
| = | 15051 200 | × | 1 59 |
| i | = | 15051 11800 |
| i | = | 1.275508 |