8 100 | + | y | ( | 1391 10000 | − | 8 100 | ) | = | 14 100 |
| Left side of the equation = | 8 100 | + | y | × | 1391 10000 | − | y | × | 8 100 |
| = | 8 100 | + | 591 10000 | y |
8 100 | + | 591 10000 | y | = | 14 100 |
591 10000 | y | = | 14 100 | − | 8 100 |
591 10000 | y | = | 3 50 |
| y | = | 3 50 | ÷ | 591 10000 |
| = | 3 50 | × | 10000 591 |
| = | 1 | × | 200 197 |
| y | = | 200 197 |
| y | = | 1.015228 |