| ( | x | − | 160 | ) | × | 3 4 | ÷ | 5000 | = | ( | x | − | 360 | ) | × | 3 4 | ÷ | 4000 |
| Left side of the equation = | ( | x | − | 160 | ) | × | 3 20000 |
| ( | x | − | 160 | ) | × | 3 20000 | = | ( | x | − | 360 | ) | × | 3 4 | ÷ | 4000 |
| Left side of the equation = | x | × | 3 20000 | − | 160 | × | 3 20000 |
| = | x | × | 3 20000 | − | 3 125 |
3 20000 | x | − | 3 125 | = | ( | x | − | 360 | ) | × | 3 4 | ÷ | 4000 |
| Right side of the equation = | ( | x | − | 360 | ) | × | 3 16000 |
3 20000 | x | − | 3 125 | = | ( | x | − | 360 | ) | × | 3 16000 |
| Right side of the equation = | x | × | 3 16000 | − | 360 | × | 3 16000 |
| = | x | × | 3 16000 | − | 27 400 |
3 20000 | x | − | 3 125 | = | 3 16000 | x | − | 27 400 |
3 20000 | x | − | 3 16000 | x | = | - | 27 400 | + | 3 125 |
| - | 3 80000 | x | = | - | 27 400 | + | 3 125 |
| - | 3 80000 | x | = | - | 87 2000 |
87 2000 | = | 3 80000 | x |
3 80000 | x | = | 87 2000 |
| x | = | 87 2000 | ÷ | 3 80000 |
| = | 87 2000 | × | 80000 3 |
| = | 29 | × | 40 |
| x | = | 1160 |