| X | ÷ | 113 100 | − | 900 | − | ( | X | ÷ | 113 100 | × | 13 100 | − | 50 | X | ) | × | 1 10 | = | 0 |
| 方程左边 = | 100 113 | X | − | 900 | − | X | ÷ | 113 100 | × | 13 100 | × | 1 10 | + | 50 | X | × | 1 10 |
| = | 100 113 | X | − | 900 | − | X | × | 13 1130 | + | 5 | X |
| = | 6637 1130 | X | − | 900 |
6637 1130 | X | − | 900 | = | 0 |
6637 1130 | X | = | 0 | + | 900 |
6637 1130 | X | = | 900 |
| X | = | 900 | ÷ | 6637 1130 |
| = | 900 | × | 1130 6637 |
| X | = | 1017000 6637 |
| X | = | 153.231882 |