| ( | 6000000 | − | 4 | X | ) | ÷ | X | ÷ | 90 | = | 10 |
| Multiply both sides of the equation by: | X |
| ( | 6000000 | − | 4 | X | ) | ÷ | 90 | = | 10 | X |
| 6000000 | ÷ | 90 | − | 4 | X | ÷ | 90 | = | 10 | X |
200000 3 | − | 2 45 | X | = | 10 | X |
| - | 2 45 | X | − | 10 | X | = | - | 200000 3 |
| - | 452 45 | X | = | - | 200000 3 |
200000 3 | = | 452 45 | X |
452 45 | X | = | 200000 3 |
| X | = | 200000 3 | ÷ | 452 45 |
| = | 200000 3 | × | 45 452 |
| = | 50000 | × | 15 113 |
| X | = | 750000 113 |
| X | = | 6637.168142 |