| 5 | y | + | 5 | ÷ | 7 | = | - | 15 | − | 5 | ÷ | 1 |
| Left side of the equation = | 5 | y | + | 5 7 |
| 5 | y | + | 5 7 | = | - | 15 | − | 5 | ÷ | 1 |
| Right side of the equation = | - | 15 | − | 5 |
| = | - | 20 |
| 5 | y | + | 5 7 | = | - | 20 |
| 5 | y | = | - | 20 | − | 5 7 |
| 5 | y | = | - | 145 7 |
| y | = | - | 145 7 | ÷ | 5 |
| = | - | 145 7 | × | 1 5 |
| = | - | 29 7 | × | 1 |
| y | = | - | 29 7 |
| y | = | - 4.142857 |