( | i | − | 7 100 | ) | ÷ | ( | 8 100 | − | 7 100 | ) | = | 1373 100 |
方程两边同时乘以: | ( | 8 100 | − | 7 100 | ) |
( | i | − | 7 100 | ) | = | 1373 100 | ( | 8 100 | − | 7 100 | ) |
i | − | 7 100 | = | 1373 100 | ( | 8 100 | − | 7 100 | ) |
i | − | 7 100 | = | 1373 100 | × | 8 100 | − | 1373 100 | × | 7 100 |
i | − | 7 100 | = | 1373 1250 | − | 9611 10000 |
i | − | 7 100 | = | 1373 10000 |
i | = | 1373 10000 | + | 7 100 |
i | = | 2073 10000 |