119 20 | + | 293 25 | y | = | 14787 500 | y | + | 14879 500 |
293 25 | y | − | 14787 500 | y | = | 14879 500 | − | 119 20 |
| - | 8927 500 | y | = | 14879 500 | − | 119 20 |
| - | 8927 500 | y | = | 2976 125 |
| - | 2976 125 | = | 8927 500 | y |
8927 500 | y | = | - | 2976 125 |
| y | = | - | 2976 125 | ÷ | 8927 500 |
| = | - | 2976 125 | × | 500 8927 |
| = | - | 2976 | × | 4 8927 |
| y | = | - | 11904 8927 |
| y | = | - 1.333483 |