| ( | 3 50 | − | 67267 1000000 | ) | ÷ | ( | 3 50 | − | 7 100 | ) | = | ( | 5239 10000 | − | x | ) | ÷ | ( | 5239 10000 | − | 5279 10000 | ) |
| 方程两边同时乘以: | ( | 3 50 | − | 7 100 | ) | , | ( | 5239 10000 | − | 5279 10000 | ) |
| ( | 3 50 | − | 67267 1000000 | ) | ( | 5239 10000 | − | 5279 10000 | ) | = | ( | 5239 10000 | − | x | ) | ( | 3 50 | − | 7 100 | ) |
3 50 | ( | 5239 10000 | − | 5279 10000 | ) | − | 67267 1000000 | ( | 5239 10000 | − | 5279 10000 | ) | = | ( | 5239 10000 | − | x | ) | ( | 3 50 | − | 7 100 | ) |
3 50 | ( | 5239 10000 | − | 5279 10000 | ) | − | 67267 1000000 | ( | 5239 10000 | − | 5279 10000 | ) | = | 5239 10000 | ( | 3 50 | − | 7 100 | ) | − | x | ( | 3 50 | − | 7 100 | ) |
3 50 | × | 5239 10000 | − | 3 50 | × | 5279 10000 | − | 67267 1000000 | ( | 5239 10000 | − | 5279 10000 | ) | = | 5239 10000 | ( | 3 50 | − | 7 100 | ) | − | x | ( | 3 50 | − | 7 100 | ) |
3 50 | × | 5239 10000 | − | 3 50 | × | 5279 10000 | − | 67267 1000000 | ( | 5239 10000 | − | 5279 10000 | ) | = | 5239 10000 | × | 3 50 | − | 5239 10000 | × | 7 100 | − | x | ( | 3 50 | − | 7 100 | ) |
15717 500000 | − | 15837 500000 | − | 67267 1000000 | ( | 5239 10000 | − | 5279 10000 | ) | = | 15717 500000 | − | 36673 1000000 | − | x | ( | 3 50 | − | 7 100 | ) |