| 4 | ÷ | 31 | × | x | + | 6 | ÷ | 31 | × | ( | 31 | − | x | ) | = | 56 |
| Left side of the equation = | 4 31 | x | + | 6 31 | ( | 31 | − | x | ) |
4 31 | x | + | 6 31 | ( | 31 | − | x | ) | = | 56 |
| Left side of the equation = | 4 31 | x | + | 6 31 | × | 31 | − | 6 31 | x |
| = | 4 31 | x | + | 6 | − | 6 31 | x |
| = | - | 2 31 | x | + | 6 |
| - | 2 31 | x | + | 6 | = | 56 |
| - | 2 31 | x | = | 56 | − | 6 |
| - | 2 31 | x | = | 50 |
| - | 50 | = | 2 31 | x |
2 31 | x | = | - | 50 |
| x | = | - | 50 | ÷ | 2 31 |
| = | - | 50 | × | 31 2 |
| = | - | 25 | × | 31 |
| x | = | - | 775 |