12812 | × | 10389 10000 | − | ( | 12812 | − | X | ) | ÷ | ( | 12812 | − | X | ) | = | 1 10 |
方程两边同时乘以: | ( | 12812 | − | X | ) |
12812 | × | 10389 10000 | ( | 12812 | − | X | ) | − | ( | 12812 | − | X | ) | = | 1 10 | ( | 12812 | − | X | ) |
12812 | × | 10389 10000 | × | 12812 | − | 12812 | × | 10389 10000 | X | − | ( | 12812 | − | X | ) | = | 1 10 | ( | 12812 | − | X | ) |
12812 | × | 10389 10000 | × | 12812 | − | 12812 | × | 10389 10000 | X | − | ( | 12812 | − | X | ) | = | 1 10 | × | 12812 | − | 1 10 | X |