127 250 | ÷ | ( | ( | 40 | ÷ | X | + | 17 2 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | ) | = | 123 250 | ÷ | ( | ( | 50 | ÷ | X | + | 34 5 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | ) |
| 方程两边同时乘以: | ( | ( | 40 | ÷ | X | + | 17 2 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | ) | , | ( | ( | 50 | ÷ | X | + | 34 5 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | ) |
127 250 | ( | ( | 50 | ÷ | X | + | 34 5 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | ) | = | 123 250 | ( | ( | 40 | ÷ | X | + | 17 2 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | ) |
127 250 | ( | 50 | ÷ | X | + | 34 5 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | = | 123 250 | ( | ( | 40 | ÷ | X | + | 17 2 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | ) |
127 250 | ( | 50 | ÷ | X | + | 34 5 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) | = | 123 250 | ( | 40 | ÷ | X | + | 17 2 | ) | ÷ | ( | 90 | ÷ | X | + | 153 10 | ) |
| 方程两边同时乘以: | ( | 90 | ÷ | X | + | 153 10 | ) | , | ( | 90 | ÷ | X | + | 153 10 | ) |
127 250 | ( | 50 | ÷ | X | + | 34 5 | ) | ( | 90 | ÷ | X | + | 153 10 | ) | = | 123 250 | ( | 40 | ÷ | X | + | 17 2 | ) | ( | 90 | ÷ | X | + | 153 10 | ) |
127 250 | × | 50 | ÷ | X | × | ( | 90 | ÷ | X | + | 153 10 | ) | + | 127 250 | × | 34 5 | ( | 90 | ÷ | X | + | 153 10 | ) | = | 123 250 | ( | 40 | ÷ | X | + | 17 2 | ) | ( | 90 | ÷ | X | + | 153 10 | ) |
127 250 | × | 50 | ÷ | X | × | ( | 90 | ÷ | X | + | 153 10 | ) | + | 127 250 | × | 34 5 | ( | 90 | ÷ | X | + | 153 10 | ) | = | 123 250 | × | 40 | ÷ | X | × | ( | 90 | ÷ | X | + | 153 10 | ) | + | 123 250 | × | 17 2 | ( | 90 | ÷ | X | + | 153 10 | ) |
127 5 | ÷ | X | × | ( | 90 | ÷ | X | + | 153 10 | ) | + | 2159 625 | ( | 90 | ÷ | X | + | 153 10 | ) | = | 492 25 | ÷ | X | × | ( | 90 | ÷ | X | + | 153 10 | ) | + | 2091 500 | ( | 90 | ÷ | X | + | 153 10 | ) |
| 方程两边同时乘以: | X |
127 5 | ( | 90 | ÷ | X | + | 153 10 | ) | + | 2159 625 | ( | 90 | ÷ | X | + | 153 10 | ) | X | = | 492 25 | ÷ | 1 | × | ( | 90 | ÷ | X | + | 153 10 | ) | × | 1 | + | 2091 500 | ( | 90 | ÷ | X | + | 153 10 | ) | X |
127 5 | × | 90 | ÷ | X | + | 127 5 | × | 153 10 | + | 2159 625 | ( | 90 | ÷ | X | + | 153 10 | ) | X | = | 492 25 | ÷ | 1 | × | ( | 90 | ÷ | X | + | 153 10 | ) | × | 1 | + | 2091 500 | ( | 90 | ÷ | X | + | 153 10 | ) | X |
127 5 | × | 90 | ÷ | X | + | 127 5 | × | 153 10 | + | 2159 625 | ( | 90 | ÷ | X | + | 153 10 | ) | X | = | 492 25 | ÷ | 1 | × | 90 | ÷ | X | × | 1 | + | 492 25 | ÷ | 1 | × | 153 10 | × | 1 | + | 2091 500 | ( | 90 | ÷ | X | + | 153 10 | ) | X |
| 2286 | ÷ | X | + | 19431 50 | + | 2159 625 | ( | 90 | ÷ | X | + | 153 10 | ) | X | = | 8856 5 | ÷ | X | + | 37638 125 | + | 2091 500 | ( | 90 | ÷ | X | + | 153 10 | ) | X |
| 方程两边同时乘以: | X |
| 2286 | + | 19431 50 | X | + | 2159 625 | ( | 90 | ÷ | X | + | 153 10 | ) | X | X | = | 8856 5 | ÷ | 1 | × | 1 | + | 37638 125 | X | + | 2091 500 | ( | 90 | ÷ | X | + | 153 10 | ) | X | X |
| 2286 | + | 19431 50 | X | + | 2159 625 | × | 90 | ÷ | X | × | X | X | + | 2159 625 | × | 153 10 | X | X | = | 8856 5 | ÷ | 1 | × | 1 | + | 37638 125 | X | + | 2091 500 | ( | 90 | ÷ | X | + | 153 10 | ) | X | X |
| 2286 | + | 19431 50 | X | + | 2159 625 | × | 90 | ÷ | X | × | X | X | + | 2159 625 | × | 153 10 | X | X | = | 8856 5 | ÷ | 1 | × | 1 | + | 37638 125 | X | + | 2091 500 | × | 90 | ÷ | X | × | X | X | + | 2091 500 | × | 153 10 |
| 2286 | + | 19431 50 | X | + | 38862 125 | ÷ | X | × | X | X | + | 330327 6250 | X | X | = | 8856 5 | + | 37638 125 | X | + | 18819 50 | ÷ | X | × | X | X | + | 319923 5000 | X | X |