| 1400 | X | − | 500 | X | − | 4000000 | − | ( | 1400 | ÷ | 113 100 | × | 13 100 | X | − | 50 | X | ) | × | 11 10 | = | 0 |
| Left side of the equation = | 900 | X | − | 4000000 | − | ( | 1400 | ÷ | 113 100 | × | 13 100 | X | − | 50 | X | ) | × | 11 10 |
| 900 | X | − | 4000000 | − | ( | 1400 | ÷ | 113 100 | × | 13 100 | X | − | 50 | X | ) | × | 11 10 | = | 0 |
| Left side of the equation = | 900 | X | − | 4000000 | − | 1400 | ÷ | 113 100 | × | 13 100 | X | × | 11 10 | + | 50 | X | × | 11 10 |
| = | 900 | X | − | 4000000 | − | 20020 113 | X | + | 55 | X |
| = | 87895 113 | X | − | 4000000 |
87895 113 | X | − | 4000000 | = | 0 |
87895 113 | X | = | 0 | + | 4000000 |
87895 113 | X | = | 4000000 |
| X | = | 4000000 | ÷ | 87895 113 |
| = | 4000000 | × | 113 87895 |
| = | 800000 | × | 113 17579 |
| X | = | 90400000 17579 |
| X | = | 5142.499573 |