| 1 | + | ( | x | + | 3 | ) | ÷ | 2 | = | ( | 1 | + | 2 | x | ) | ÷ | 7 |
| Left side of the equation = | 1 | + | x | × | 1 2 | + | 3 | × | 1 2 |
| = | 1 | + | x | × | 1 2 | + | 3 2 |
| = | 5 2 | + | 1 2 | x |
5 2 | + | 1 2 | x | = | ( | 1 | + | 2 | x | ) | ÷ | 7 |
| Right side of the equation = | 1 | × | 1 7 | + | 2 | x | × | 1 7 |
| = | 1 7 | + | 2 7 | x |
5 2 | + | 1 2 | x | = | 1 7 | + | 2 7 | x |
1 2 | x | − | 2 7 | x | = | 1 7 | − | 5 2 |
3 14 | x | = | 1 7 | − | 5 2 |
3 14 | x | = | - | 33 14 |
| x | = | - | 33 14 | ÷ | 3 14 |
| = | - | 33 14 | × | 14 3 |
| = | - | 11 | × | 1 |
| x | = | - | 11 |