| ( | 273 1000 | × | 18 | ) | ÷ | ( | ( | 20 | − | 3223 1000 | ) | × | 60 | + | 213 1000 | × | 18 | ) | = | ( | 42 25 | × | 18 | ) | ÷ | ( | 42 25 | × | 18 | + | 23223 1000 | X | ) |
| 方程两边同时乘以: | ( | ( | 20 | − | 3223 1000 | ) | × | 60 | + | 213 1000 | × | 18 | ) | , | ( | 42 25 | × | 18 | + | 23223 1000 | X | ) |
| ( | 273 1000 | × | 18 | ) | ( | 42 25 | × | 18 | + | 23223 1000 | X | ) | = | ( | 42 25 | × | 18 | ) | ( | ( | 20 | − | 3223 1000 | ) | × | 60 | + | 213 1000 | × | 18 | ) |
273 1000 | × | 18 | ( | 42 25 | × | 18 | + | 23223 1000 | X | ) | = | ( | 42 25 | × | 18 | ) | ( | ( | 20 | − | 3223 1000 | ) | × | 60 | + | 213 1000 | × | 18 | ) |
273 1000 | × | 18 | ( | 42 25 | × | 18 | + | 23223 1000 | X | ) | = | 42 25 | × | 18 | ( | ( | 20 | − | 3223 1000 | ) | × | 60 | + | 213 1000 | × | 18 | ) |
2457 500 | ( | 42 25 | × | 18 | + | 23223 1000 | X | ) | = | 756 25 | ( | ( | 20 | − | 3223 1000 | ) | × | 60 | + | 213 1000 | × | 18 | ) |
2457 500 | × | 42 25 | × | 18 | + | 2457 500 | × | 23223 1000 | X | = | 756 25 | ( | ( | 20 | − | 3223 1000 | ) | × | 60 | + | 213 1000 | × | 18 | ) |
2457 500 | × | 42 25 | × | 18 | + | 2457 500 | × | 23223 1000 | X | = | 756 25 | ( | 20 | − | 3223 1000 | ) | × | 60 | + | 756 25 | × | 213 1000 | × | 18 |
464373 3125 | + | 57058911 500000 | X | = | 9072 5 | ( | 20 | − | 3223 1000 | ) | + | 362313 3125 |
464373 3125 | + | 57058911 500000 | X | = | 9072 5 | × | 20 | − | 9072 5 | × | 3223 1000 | + | 362313 3125 |
464373 3125 | + | 57058911 500000 | X | = | 36288 | − | 3654882 625 | + | 362313 3125 |