| b | × | 2 | − | 139 25 | b | − | 9396 25 | = | 0 |
| Left side of the equation = | - | 89 25 | b | − | 9396 25 |
| - | 89 25 | b | − | 9396 25 | = | 0 |
| - | 89 25 | b | = | 0 | + | 9396 25 |
| - | 89 25 | b | = | 9396 25 |
| - | 9396 25 | = | 89 25 | b |
89 25 | b | = | - | 9396 25 |
| b | = | - | 9396 25 | ÷ | 89 25 |
| = | - | 9396 25 | × | 25 89 |
| = | - | 9396 | × | 1 89 |
| b | = | - | 9396 89 |
| b | = | - 105.573034 |