| 2 | X | ÷ | 3 10 | − | 8 5 | − | 3 | X | ÷ | 3 5 | = | 31 | X | + | 8 | ÷ | 2 |
| Left side of the equation = | 20 3 | X | − | 8 5 | − | 5 | X |
| = | 5 3 | X | − | 8 5 |
5 3 | X | − | 8 5 | = | 31 | X | + | 8 | ÷ | 2 |
| Right side of the equation = | 31 | X | + | 4 |
5 3 | X | − | 8 5 | = | 31 | X | + | 4 |
5 3 | X | − | 31 | X | = | 4 | + | 8 5 |
| - | 88 3 | X | = | 4 | + | 8 5 |
| - | 88 3 | X | = | 28 5 |
| - | 28 5 | = | 88 3 | X |
88 3 | X | = | - | 28 5 |
| X | = | - | 28 5 | ÷ | 88 3 |
| = | - | 28 5 | × | 3 88 |
| = | - | 7 5 | × | 3 22 |
| X | = | - | 21 110 |
| X | = | - 0.190909 |