| ( | Y | − | 10 100 | ) | ÷ | ( | 15 100 | − | 10 100 | ) | = | ( | 0 | − | 2 | ) | ÷ | ( | - | 8 | − | 2 | ) |
| Multiply both sides of the equation by: | ( | 15 100 | − | 10 100 | ) | , | ( | - | 8 | − | 2 | ) |
| ( | Y | − | 10 100 | ) | ( | - | 8 | − | 2 | ) | = | ( | 0 | − | 2 | ) | ( | 15 100 | − | 10 100 | ) |
| Y | ( | - | 8 | − | 2 | ) | − | 10 100 | ( | - | 8 | − | 2 | ) | = | ( | 0 | − | 2 | ) | ( | 15 100 | − | 10 100 | ) |
| Y | ( | - | 8 | − | 2 | ) | − | 10 100 | ( | - | 8 | − | 2 | ) | = | 0 | ( | 15 100 | − | 10 100 | ) | − | 2 | ( | 15 100 | − | 10 100 | ) |
| - | Y | × | 8 | − | Y | × | 2 | − | 10 100 | ( | - | 8 | − | 2 | ) | = | 0 | ( | 15 100 | − | 10 100 | ) | − | 2 | ( | 15 100 | − | 10 100 | ) |
| - | Y | × | 8 | − | Y | × | 2 | − | 10 100 | ( | - | 8 | − | 2 | ) | = | 0 | × | 15 100 | − | 0 | × | 10 100 | − | 2 | ( | 15 100 | − | 10 100 | ) |
| - | Y | × | 8 | − | Y | × | 2 | − | 10 100 | ( | - | 8 | − | 2 | ) | = | 0 | − | 0 | − | 2 | ( | 15 100 | − | 10 100 | ) |
| - | 10 | Y | − | 10 100 | ( | - | 8 | − | 2 | ) | = | 0 | − | 2 | ( | 15 100 | − | 10 100 | ) |
| - | 10 | Y | + | 10 100 | × | 8 | + | 10 100 | × | 2 | = | - | 2 | ( | 15 100 | − | 10 100 | ) |
| - | 10 | Y | + | 10 100 | × | 8 | + | 10 100 | × | 2 | = | - | 2 | × | 15 100 | + | 2 | × | 10 100 |
| - | 10 | Y | + | 4 5 | + | 1 5 | = | - | 3 10 | + | 1 5 |
| - | 10 | Y | + | 1 | = | - | 1 10 |
| - | 10 | Y | = | - | 1 10 | − | 1 |
| - | 10 | Y | = | - | 11 10 |
11 10 | = | 10 | Y |
| 10 | Y | = | 11 10 |
| Y | = | 11 10 | ÷ | 10 |
| = | 11 10 | × | 1 10 |
| Y | = | 11 100 |
| Y | = | 0.11 |