| ( | 158 | − | X | ) | ÷ | X | = | 897 10000 |
| Multiply both sides of the equation by: | X |
| ( | 158 | − | X | ) | = | 897 10000 | X |
| 158 | − | X | = | 897 10000 | X |
| - | X | − | 897 10000 | X | = | - | 158 |
| - | 10897 10000 | X | = | - | 158 |
| 158 | = | 10897 10000 | X |
10897 10000 | X | = | 158 |
| X | = | 158 | ÷ | 10897 10000 |
| = | 158 | × | 10000 10897 |
| X | = | 1580000 10897 |
| X | = | 144.994035 |