| ( | x | − | 500 | − | 6000 | × | 6 100 | ) | ÷ | 3000 | = | 0 |
| Left side of the equation = | x | × | 1 3000 | − | 500 | × | 1 3000 | − | 6000 | × | 6 100 | × | 1 3000 |
| = | x | × | 1 3000 | − | 1 6 | − | 3 25 |
| = | 1 3000 | x | − | 43 150 |
1 3000 | x | − | 43 150 | = | 0 |
1 3000 | x | = | 0 | + | 43 150 |
1 3000 | x | = | 43 150 |
| x | = | 43 150 | ÷ | 1 3000 |
| = | 43 150 | × | 3000 |
| = | 43 | × | 20 |
| x | = | 860 |