60000 | ÷ | x | − | 4 | = | 60000 | ÷ | ( | x | + | 500 | ) |
方程两边同时乘以: | x | , | ( | x | + | 500 | ) |
60000 | ( | x | + | 500 | ) | − | 4 | x | ( | x | + | 500 | ) | = | 60000 | x |
60000 | x | + | 60000 | × | 500 | − | 4 | x | ( | x | + | 500 | ) | = | 60000 | x |
60000 | x | + | 30000000 | − | 4 | x | ( | x | + | 500 | ) | = | 60000 | x |
60000 | x | + | 30000000 | − | 4 | x | x | − | 4 | x | × | 500 | = | 60000 | x |
60000 | x | + | 30000000 | − | 4 | x | x | − | 2000 | x | = | 60000 | x |
58000 | x | + | 30000000 | − | 4 | x | x | = | 60000 | x |