| 1530 | X | × | 1 | − | 510 | X | × | 2 | = | 6 |
| Left side of the equation = | 1530 | X | − | 1020 | X |
| = | 510 | X |
| 510 | X | = | 6 |
| X | = | 6 | ÷ | 510 |
| = | 6 | × | 1 510 |
| = | 1 | × | 1 85 |
| X | = | 1 85 |
| X | = | 0.011765 |
| 5510 | X | × | 2 | − | 510 | X | × | 1 | = | - | 12 |
| Left side of the equation = | 11020 | X | − | 510 | X |
| = | 10510 | X |
| 10510 | X | = | - | 12 |
| X | = | - | 12 | ÷ | 10510 |
| = | - | 12 | × | 1 10510 |
| = | - | 6 | × | 1 5255 |
| X | = | - | 6 5255 |
| X | = | - 0.001142 |