| 75996 | = | 6666 | ( | 9 | − | x | ) | + | 6000 | x |
| Right side of the equation = | 6666 | × | 9 | − | 6666 | x | + | 6000 | x |
| = | 59994 | − | 6666 | x | + | 6000 | x |
| = | 59994 | − | 666 | x |
| 75996 | = | 59994 | − | 666 | x |
| 666 | x | = | 59994 | − | 75996 |
| 666 | x | = | - | 16002 |
| x | = | - | 16002 | ÷ | 666 |
| = | - | 16002 | × | 1 666 |
| = | - | 889 | × | 1 37 |
| x | = | - | 889 37 |
| x | = | - 24.027027 |