| ( | x | − | 15000 | ) | × | 69 250 | − | 10000 | = | 0 |
| Left side of the equation = | x | × | 69 250 | − | 15000 | × | 69 250 | − | 10000 |
| = | x | × | 69 250 | − | 4140 | − | 10000 |
| = | 69 250 | x | − | 14140 |
69 250 | x | − | 14140 | = | 0 |
69 250 | x | = | 0 | + | 14140 |
69 250 | x | = | 14140 |
| x | = | 14140 | ÷ | 69 250 |
| = | 14140 | × | 250 69 |
| x | = | 3535000 69 |
| x | = | 51231.884058 |