| ( | 26000 | − | y | ) | ÷ | 50 | + | ( | 18500 | − | y | ) | ÷ | 114 5 | + | y | ÷ | 30 | = | 1200 |
| Left side of the equation = | 26000 | × | 1 50 | − | y | × | 1 50 | + | ( | 18500 | − | y | ) | × | 5 114 | + | 1 30 | y |
| = | 520 | − | y | × | 1 50 | + | ( | 18500 | − | y | ) | × | 5 114 | + | 1 30 | y |
| = | 520 | + | 1 75 | y | + | ( | 18500 | − | y | ) | × | 5 114 |
| = | 520 | + | 1 75 | y | + | 18500 | × | 5 114 | − | y | × | 5 114 |
| = | 520 | + | 1 75 | y | + | 46250 57 | − | y | × | 5 114 |
| = | 75890 57 | − | 29 950 | y |
75890 57 | − | 29 950 | y | = | 1200 |
| - | 29 950 | y | = | 1200 | − | 75890 57 |
| - | 29 950 | y | = | - | 7490 57 |
7490 57 | = | 29 950 | y |
29 950 | y | = | 7490 57 |
| y | = | 7490 57 | ÷ | 29 950 |
| = | 7490 57 | × | 950 29 |
| = | 7490 3 | × | 50 29 |
| y | = | 374500 87 |
| y | = | 4304.597701 |