180 | ÷ | x | − | 2 | ÷ | 3 | = | 1 | + | ( | 180 | − | x | ) | ÷ | 3 2 | ÷ | x |
方程两边同时乘以: | x |
180 | − | 2 | ÷ | 3 | × | x | = | 1 | x | + | ( | 180 | − | x | ) | ÷ | 3 2 | ÷ | 1 | × | 1 |
180 | − | 2 | ÷ | 3 | × | x | = | 1 | x | + | 180 | ÷ | 3 2 | ÷ | 1 | × | 1 | − | x | ÷ | 3 2 | ÷ | 1 | × | 1 |
180 | − | 2 3 | x | = | 1 | x | + | 120 | − | x | × | 2 3 |
180 | − | 2 3 | x | = | 1 3 | x | + | 120 |
- | 2 3 | x | − | 1 3 | x | = | 120 | − | 180 |
- | x | = | 120 | − | 180 |
- | x | = | 120 | − | 180 |
- | x | = | - | 60 |
60 | = | x |
x | = | 60 |