| 4 | × | 2500 | y | = | 6 | × | 250 | y | + | 20000 |
| Left side of the equation = | 10000 | y |
| 10000 | y | = | 6 | × | 250 | y | + | 20000 |
| Right side of the equation = | 1500 | y | + | 20000 |
| 10000 | y | = | 1500 | y | + | 20000 |
| 10000 | y | − | 1500 | y | = | 20000 |
| 8500 | y | = | 20000 |
| y | = | 20000 | ÷ | 8500 |
| = | 20000 | × | 1 8500 |
| = | 40 | × | 1 17 |
| y | = | 40 17 |
| y | = | 2.352941 |