| ( | 5 | + | 5 | + | 6 | + | 7 | + | m | + | 7 | + | 8 | ) | ÷ | 7 | = | 6 |
| Left side of the equation = | 5 | × | 1 7 | + | 5 | × | 1 7 | + | 6 | × | 1 7 | + | 7 | × | 1 7 | + | m | × | 1 7 | + | 7 | × | 1 7 |
| = | 5 7 | + | 5 7 | + | 6 7 | + | 1 | + | m | × | 1 7 | + | 1 | + | 8 7 |
| = | 38 7 | + | 1 7 | m |
38 7 | + | 1 7 | m | = | 6 |
1 7 | m | = | 6 | − | 38 7 |
1 7 | m | = | 4 7 |
| m | = | 4 7 | ÷ | 1 7 |
| = | 4 7 | × | 7 |
| = | 4 | × | 1 |
| m | = | 4 |