56 | ÷ | ( | 100 | X | ) | + | 40 | ÷ | ( | 84 | − | 84 | X | ) | = | 1 | ÷ | 2 |
方程两边同时乘以: | ( | 100 | X | ) |
56 | + | 40 | ÷ | ( | 84 | − | 84 | X | ) | × | ( | 100 | X | ) | = | 1 | ÷ | 2 | × | ( | 100 | X | ) |
56 | + | 40 | ÷ | ( | 84 | − | 84 | X | ) | × | 100 | X | = | 1 | ÷ | 2 | × | ( | 100 | X | ) |
56 | + | 40 | ÷ | ( | 84 | − | 84 | X | ) | × | 100 | X | = | 1 | ÷ | 2 | × | 100 | X |
56 | + | 4000 | ÷ | ( | 84 | − | 84 | X | ) | × | X | = | 50 | X |
方程两边同时乘以: | ( | 84 | − | 84 | X | ) |
56 | ( | 84 | − | 84 | X | ) | + | 4000 | X | = | 50 | X | ( | 84 | − | 84 | X | ) |
56 | × | 84 | − | 56 | × | 84 | X | + | 4000 | X | = | 50 | X | ( | 84 | − | 84 | X | ) |
56 | × | 84 | − | 56 | × | 84 | X | + | 4000 | X | = | 50 | X | × | 84 | − | 50 | X | × | 84 | X |
4704 | − | 4704 | X | + | 4000 | X | = | 4200 | X | − | 4200 | X | X |
4704 | − | 704 | X | = | 4200 | X | − | 4200 | X | X |