| 500 | X | = | 3000000 | + | ( | 600 | + | 15 | ) | X |
| Right side of the equation = | 3000000 | + | 600 | X | + | 15 | X |
| = | 3000000 | + | 615 | X |
| 500 | X | = | 3000000 | + | 615 | X |
| 500 | X | − | 615 | X | = | 3000000 |
| - | 115 | X | = | 3000000 |
| - | 3000000 | = | 115 | X |
| 115 | X | = | - | 3000000 |
| X | = | - | 3000000 | ÷ | 115 |
| = | - | 3000000 | × | 1 115 |
| = | - | 600000 | × | 1 23 |
| X | = | - | 600000 23 |
| X | = | - 26086.956522 |