| ( | 192539 | ( | 8 | + | x | ) | − | 180000 | ) | = | 275000 | ( | 8 | + | x | ) | × | 7 10 |
| Left side of the equation = | 192539 | ( | 8 | + | x | ) | − | 180000 |
| = | 192539 | × | 8 | + | 192539 | x | − | 180000 |
| = | 1540312 | + | 192539 | x | − | 180000 |
| = | 1360312 | + | 192539 | x |
| 1360312 | + | 192539 | x | = | 275000 | ( | 8 | + | x | ) | × | 7 10 |
| Right side of the equation = | 192500 | ( | 8 | + | x | ) |
| 1360312 | + | 192539 | x | = | 192500 | ( | 8 | + | x | ) |
| Right side of the equation = | 192500 | × | 8 | + | 192500 | x |
| = | 1540000 | + | 192500 | x |
| 1360312 | + | 192539 | x | = | 1540000 | + | 192500 | x |
| 192539 | x | − | 192500 | x | = | 1540000 | − | 1360312 |
| 39 | x | = | 1540000 | − | 1360312 |
| 39 | x | = | 179688 |
| x | = | 179688 | ÷ | 39 |
| = | 179688 | × | 1 39 |
| = | 59896 | × | 1 13 |
| x | = | 59896 13 |
| x | = | 4607.384615 |