1 100 | = | 1773 2000 | ( | 637 100 | − | X | ) | ÷ | ( | 637 100 | × | 50007 10000 | ) |
| 方程两边同时乘以: | ( | 637 100 | × | 50007 10000 | ) |
1 100 | ( | 637 100 | × | 50007 10000 | ) | = | 1773 2000 | ( | 637 100 | − | X | ) |
1 100 | × | 637 100 | × | 50007 10000 | = | 1773 2000 | ( | 637 100 | − | X | ) |
1 100 | × | 637 100 | × | 50007 10000 | = | 1773 2000 | × | 637 100 | − | 1773 2000 | X |
31854459 100000000 | = | 1129401 200000 | − | 1773 2000 | X |
1773 2000 | X | = | 1129401 200000 | − | 31854459 100000000 |