| 150000 | ( | 30 | − | Y | ) | = | 3000000 | + | Y | × | 10000 | ( | 30 | − | Y | ) | ÷ | 6 |
| Left side of the equation = | 150000 | × | 30 | − | 150000 | Y |
| = | 4500000 | − | 150000 | Y |
| 4500000 | − | 150000 | Y | = | 3000000 | + | Y | × | 10000 | ( | 30 | − | Y | ) | ÷ | 6 |
| Right side of the equation = | 3000000 | + | Y | × | 5000 3 | ( | 30 | − | Y | ) |
| 4500000 | − | 150000 | Y | = | 3000000 | + | Y | × | 5000 3 | ( | 30 | − | Y | ) |
| Right side of the equation = | 3000000 | + | Y | × | 5000 3 | × | 30 | − | Y | × | 5000 3 | Y |
| = | 3000000 | + | Y | × | 50000 | − | Y | × | 5000 3 | Y |
| 4500000 | − | 150000 | Y | = | 3000000 | + | 50000 | Y | − | Y | × | 5000 3 | Y |