| X | ÷ | 135 | − | 38 5 | ÷ | 340 | − | 6 | ÷ | 500 | = | 119 50000 | ( | X | + | 68 5 | ) |
| 方程左边 = | X | × | 1 135 | − | 19 850 | − | 3 250 |
| = | 1 135 | X | − | 73 2125 |
1 135 | X | − | 73 2125 | = | 119 50000 | ( | X | + | 68 5 | ) |
| 方程右边 = | 119 50000 | X | + | 119 50000 | × | 68 5 |
| = | 119 50000 | X | + | 2023 62500 |
1 135 | X | − | 73 2125 | = | 119 50000 | X | + | 2023 62500 |
1 135 | X | − | 119 50000 | X | = | 2023 62500 | + | 73 2125 |
6787 1350000 | X | = | 2023 62500 | + | 73 2125 |
6787 1350000 | X | = | 70891 1062500 |
| X | = | 70891 1062500 | ÷ | 6787 1350000 |
| = | 70891 1062500 | × | 1350000 6787 |
| = | 70891 85 | × | 108 6787 |
| X | = | 7656228 576895 |
| X | = | 13.271441 |