| 15 | ÷ | 103 | + | 3 | ÷ | 50 | + | 4 | ÷ | 6679 50 | + | X | ÷ | 1000 | + | ( | 733 10 | − | X | ) | ÷ | 1650 | = | 147 500 |
| 方程左边 = | 15 103 | + | 3 50 | + | 200 6679 | + | X | × | 1 1000 | + | ( | 733 10 | − | X | ) | × | 1 1650 |
| = | 8103061 34396850 | + | 1 1000 | X | + | ( | 733 10 | − | X | ) | × | 1 1650 |
8103061 34396850 | + | 1 1000 | X | + | ( | 733 10 | − | X | ) | × | 1 1650 | = | 147 500 |
| 方程左边 = | 8103061 34396850 | + | 1 1000 | X | + | 733 10 | × | 1 1650 | − | X | × | 1 1650 |
| = | 8103061 34396850 | + | 1 1000 | X | + | 733 16500 | − | X | × | 1 1650 |