| x | ÷ | 2 | × | 1 20 | = | 4500 | − | x | ÷ | 4 | × | 1 50 |
| Left side of the equation = | x | × | 1 40 |
1 40 | x | = | 4500 | − | x | ÷ | 4 | × | 1 50 |
| Right side of the equation = | 4500 | − | x | × | 1 200 |
1 40 | x | = | 4500 | − | 1 200 | x |
1 40 | x | + | 1 200 | x | = | 4500 |
3 100 | x | = | 4500 |
| x | = | 4500 | ÷ | 3 100 |
| = | 4500 | × | 100 3 |
| = | 1500 | × | 100 |
| x | = | 150000 |