| 1 | ÷ | 10 | = | ( | 18 | − | x | ) | ÷ | 28 |
| Left side of the equation = | 1 10 |
1 10 | = | ( | 18 | − | x | ) | ÷ | 28 |
| Right side of the equation = | 18 | × | 1 28 | − | x | × | 1 28 |
| = | 9 14 | − | x | × | 1 28 |
1 10 | = | 9 14 | − | 1 28 | x |
1 28 | x | = | 9 14 | − | 1 10 |
1 28 | x | = | 19 35 |
| x | = | 19 35 | ÷ | 1 28 |
| = | 19 35 | × | 28 |
| = | 19 5 | × | 4 |
| x | = | 76 5 |
| x | = | 15.2 |