| 1258 | + | 1852 | + | 932 | − | 2 | y | − | ( | 352 | − | y | ) | = | 3542 |
| Left side of the equation = | 4042 | − | 2 | y | − | ( | 352 | − | y | ) |
| 4042 | − | 2 | y | − | ( | 352 | − | y | ) | = | 3542 |
| Left side of the equation = | 4042 | − | 2 | y | − | 352 | + | y |
| = | 3690 | − | 1 | y |
| 3690 | − | 1 | y | = | 3542 |
| - | 1 | y | = | 3542 | − | 3690 |
| - | y | = | 3542 | − | 3690 |
| - | y | = | - | 148 |
| 148 | = | y |
| y | = | 148 |