x | x | ÷ | ( | 1 | − | x | ) | ÷ | ( | 1 | − | x | ) | = | 139 100 |
方程两边同时乘以: | ( | 1 | − | x | ) |
x | x | ÷ | ( | 1 | − | x | ) | = | 139 100 | ( | 1 | − | x | ) |
x | x | ÷ | ( | 1 | − | x | ) | = | 139 100 | × | 1 | − | 139 100 | x |
x | x | ÷ | ( | 1 | − | x | ) | = | 139 100 | − | 139 100 | x |
方程两边同时乘以: | ( | 1 | − | x | ) |
x | x | = | 139 100 | ( | 1 | − | x | ) | − | 139 100 | x | ( | 1 | − | x | ) |
x | x | = | 139 100 | × | 1 | − | 139 100 | x | − | 139 100 | x | ( | 1 | − | x | ) |
x | x | = | 139 100 | − | 139 100 | x | − | 139 100 | x | ( | 1 | − | x | ) |
x | x | = | 139 100 | − | 139 100 | x | − | 139 100 | x | × | 1 | + | 139 100 | x | x |
x | x | = | 139 100 | − | 139 100 | x | − | 139 100 | x | + | 139 100 | x | x |
x | x | = | 139 100 | − | 139 50 | x | + | 139 100 | x | x |