30000 | ÷ | x | + | 10000 | ÷ | ( | x | − | 33 5 | ) | = | 150 |
方程两边同时乘以: | x |
30000 | + | 10000 | ÷ | ( | x | − | 33 5 | ) | × | x | = | 150 | x |
方程两边同时乘以: | ( | x | − | 33 5 | ) |
30000 | ( | x | − | 33 5 | ) | + | 10000 | x | = | 150 | x | ( | x | − | 33 5 | ) |
30000 | x | − | 30000 | × | 33 5 | + | 10000 | x | = | 150 | x | ( | x | − | 33 5 | ) |
30000 | x | − | 30000 | × | 33 5 | + | 10000 | x | = | 150 | x | x | − | 150 | x | × | 33 5 |
30000 | x | − | 198000 | + | 10000 | x | = | 150 | x | x | − | 990 | x |
40000 | x | − | 198000 | = | 150 | x | x | − | 990 | x |