| 2574382657446200000 | ÷ | ( | 7734366873 4 | − | X | ) | + | 403621189513183 100 | ÷ | X | = | 6741008409 50 |
| 方程两边同时乘以: | ( | 7734366873 4 | − | X | ) |
| 2574382657446200000 | + | 403621189513183 100 | ÷ | X | × | ( | 7734366873 4 | − | X | ) | = | 6741008409 50 | ( | 7734366873 4 | − | X | ) |
| 2574382657446200000 | + | 403621189513183 100 | ÷ | X | × | 7734366873 4 | − | 403621189513183 100 | ÷ | X | × | X | = | 6741008409 50 | ( | 7734366873 4 | − | X | ) |
| 2574382657446200000 | + | 403621189513183 100 | ÷ | X | × | 7734366873 4 | − | 403621189513183 100 | ÷ | X | × | X | = | 6741008409 50 | × | 7734366873 4 | − | 6741008409 50 | X |