| ( | x | − | 40 | ) | × | 725 | × | 27 20 | + | x | × | 725 | × | 7 20 | + | 15000 | = | 82000 |
| Left side of the equation = | ( | x | − | 40 | ) | × | 3915 4 | + | x | × | 1015 4 | + | 15000 |
| ( | x | − | 40 | ) | × | 3915 4 | + | 1015 4 | x | + | 15000 | = | 82000 |
| Left side of the equation = | x | × | 3915 4 | − | 40 | × | 3915 4 | + | 1015 4 | x | + | 15000 |
| = | x | × | 3915 4 | − | 39150 | + | 1015 4 | x | + | 15000 |
| = | 2465 2 | x | − | 24150 |
2465 2 | x | − | 24150 | = | 82000 |
2465 2 | x | = | 82000 | + | 24150 |
2465 2 | x | = | 106150 |
| x | = | 106150 | ÷ | 2465 2 |
| = | 106150 | × | 2 2465 |
| = | 21230 | × | 2 493 |
| x | = | 42460 493 |
| x | = | 86.125761 |