| ( | 1500 | − | x | ) | × | 11 400 | = | 19 10 | x | ÷ | 30 | ÷ | 12 |
| Left side of the equation = | 1500 | × | 11 400 | − | x | × | 11 400 |
| = | 165 4 | − | x | × | 11 400 |
165 4 | − | 11 400 | x | = | 19 10 | x | ÷ | 30 | ÷ | 12 |
| Right side of the equation = | 19 3600 | x |
165 4 | − | 11 400 | x | = | 19 3600 | x |
| - | 11 400 | x | − | 19 3600 | x | = | - | 165 4 |
| - | 59 1800 | x | = | - | 165 4 |
165 4 | = | 59 1800 | x |
59 1800 | x | = | 165 4 |
| x | = | 165 4 | ÷ | 59 1800 |
| = | 165 4 | × | 1800 59 |
| = | 165 | × | 450 59 |
| x | = | 74250 59 |
| x | = | 1258.474576 |