1 20 | x | ÷ | 2 | + | 1 50 | ( | 4500 | − | x | ) | = | 4500 |
| Left side of the equation = | 1 40 | x | + | 1 50 | ( | 4500 | − | x | ) |
1 40 | x | + | 1 50 | ( | 4500 | − | x | ) | = | 4500 |
| Left side of the equation = | 1 40 | x | + | 1 50 | × | 4500 | − | 1 50 | x |
| = | 1 40 | x | + | 90 | − | 1 50 | x |
| = | 1 200 | x | + | 90 |
1 200 | x | + | 90 | = | 4500 |
1 200 | x | = | 4500 | − | 90 |
1 200 | x | = | 4410 |
| x | = | 4410 | ÷ | 1 200 |
| = | 4410 | × | 200 |
| x | = | 882000 |