| 22050 | × | 300 | + | 50 | y | = | 300 | + | y | × | 12000 |
| Left side of the equation = | 6615000 | + | 50 | y |
| 6615000 | + | 50 | y | = | 300 | + | y | × | 12000 |
| 50 | y | − | 12000 | y | = | 300 | − | 6615000 |
| - | 11950 | y | = | 300 | − | 6615000 |
| - | 11950 | y | = | - | 6614700 |
| 6614700 | = | 11950 | y |
| 11950 | y | = | 6614700 |
| y | = | 6614700 | ÷ | 11950 |
| = | 6614700 | × | 1 11950 |
| = | 132294 | × | 1 239 |
| y | = | 132294 239 |
| y | = | 553.531381 |