120 | ÷ | i | × | ( | 1 | − | 1 | ÷ | ( | 1 | + | i | ÷ | 2 | ) | × | 10 | ) | + | 1000 | ÷ | ( | 1 | + | i | ÷ | 2 | ) | × | 10 | = | 1200 |
方程两边同时乘以: | i |
120 | ( | 1 | − | 1 | ÷ | ( | 1 | + | i | ÷ | 2 | ) | × | 10 | ) | + | 1000 | ÷ | ( | 1 | + | i | ÷ | 2 | ) | × | 10 | i | = | 1200 | i |
120 | × | 1 | − | 120 | × | 1 | ÷ | ( | 1 | + | i | ÷ | 2 | ) | × | 10 | + | 1000 | ÷ | ( | 1 | + | i | ÷ | 2 | ) | × | 10 | i | = | 1200 | i |
120 | − | 1200 | ÷ | ( | 1 | + | i | ÷ | 2 | ) | + | 10000 | ÷ | ( | 1 | + | i | ÷ | 2 | ) | × | i | = | 1200 | i |
方程两边同时乘以: | ( | 1 | + | i | ÷ | 2 | ) |
120 | ( | 1 | + | i | ÷ | 2 | ) | − | 1200 | + | 10000 | i | = | 1200 | i | ( | 1 | + | i | ÷ | 2 | ) |
120 | × | 1 | + | 120 | i | ÷ | 2 | − | 1200 | + | 10000 | i | = | 1200 | i | ( | 1 | + | i | ÷ | 2 | ) |
120 | × | 1 | + | 120 | i | ÷ | 2 | − | 1200 | + | 10000 | i | = | 1200 | i | × | 1 | + | 1200 | i | i | ÷ | 2 |
120 | + | 60 | i | − | 1200 | + | 10000 | i | = | 1200 | i | + | 600 | i | i |
- | 1080 | + | 10060 | i | = | 1200 | i | + | 600 | i | i |