2753 50 | + | 593 50 | y | = | 661 20 | y | + | 11189 100 |
593 50 | y | − | 661 20 | y | = | 11189 100 | − | 2753 50 |
| - | 2119 100 | y | = | 11189 100 | − | 2753 50 |
| - | 2119 100 | y | = | 5683 100 |
| - | 5683 100 | = | 2119 100 | y |
2119 100 | y | = | - | 5683 100 |
| y | = | - | 5683 100 | ÷ | 2119 100 |
| = | - | 5683 100 | × | 100 2119 |
| = | - | 5683 | × | 1 2119 |
| y | = | - | 5683 2119 |
| y | = | - 2.681925 |