| X | ÷ | 113 100 | − | 500 | X | − | 400 | − | ( | X | ÷ | 113 100 | × | 13 100 | − | 50 | X | ) | × | 1 10 | = | 0 |
| 方程左边 = | - | 56400 113 | X | − | 400 | − | ( | X | ÷ | 113 100 | × | 13 100 | − | 50 | X | ) | × | 1 10 |
| - | 56400 113 | X | − | 400 | − | ( | X | ÷ | 113 100 | × | 13 100 | − | 50 | X | ) | × | 1 10 | = | 0 |
| 方程左边 = | - | 56400 113 | X | − | 400 | − | X | ÷ | 113 100 | × | 13 100 | × | 1 10 | + | 50 | X | × | 1 10 |
| = | - | 56400 113 | X | − | 400 | − | X | × | 13 1130 | + | 5 | X |
| = | - | 558363 1130 | X | − | 400 |
| - | 558363 1130 | X | − | 400 | = | 0 |
| - | 558363 1130 | X | = | 0 | + | 400 |
| - | 558363 1130 | X | = | 400 |
| - | 400 | = | 558363 1130 | X |
558363 1130 | X | = | - | 400 |
| X | = | - | 400 | ÷ | 558363 1130 |
| = | - | 400 | × | 1130 558363 |
| X | = | - | 452000 558363 |
| X | = | - 0.809509 |