| ( | X | − | 998 5 | ) | ÷ | 9 2 | = | ( | X | − | 2 25 | ) | − | 1 100 |
| X | ÷ | 9 2 | − | 998 5 | ÷ | 9 2 | = | ( | X | − | 2 25 | ) | − | 1 100 |
| X | ÷ | 9 2 | − | 998 5 | ÷ | 9 2 | = | X | − | 2 25 | − | 1 100 |
| X | × | 2 9 | − | 1996 45 | = | X | − | 2 25 | − | 1 100 |
2 9 | X | − | 1996 45 | = | X | − | 9 100 |
2 9 | X | − | X | = | - | 9 100 | + | 1996 45 |
| - | 7 9 | X | = | - | 9 100 | + | 1996 45 |
| - | 7 9 | X | = | 39839 900 |
| - | 39839 900 | = | 7 9 | X |
7 9 | X | = | - | 39839 900 |
| X | = | - | 39839 900 | ÷ | 7 9 |
| = | - | 39839 900 | × | 9 7 |
| = | - | 39839 100 | × | 1 7 |
| X | = | - | 39839 700 |
| X | = | - 56.912857 |