| 128 | ÷ | x | ÷ | 59 50 | × | 30 | = | 180 |
| Multiply both sides of the equation by: | x |
| 128 | ÷ | 59 50 | × | 30 | = | 180 | x |
| - | 180 | x | = | - | 128 | ÷ | 59 50 | × | 30 |
| - | 180 | x | = | - | 192000 59 |
192000 59 | = | 180 | x |
| 180 | x | = | 192000 59 |
| x | = | 192000 59 | ÷ | 180 |
| = | 192000 59 | × | 1 180 |
| = | 3200 59 | × | 1 3 |
| x | = | 3200 177 |
| x | = | 18.079096 |