( | x | − | 2 | ) | × | 13 | + | 4 | = | x | × | 15 | − | 2 |
Left side of the equation = | x | × | 13 | − | 2 | × | 13 | + | 4 |
= | x | × | 13 | − | 26 | + | 4 |
= | 13 | x | − | 22 |
13 | x | − | 22 | = | x | × | 15 | − | 2 |
13 | x | − | 15 | x | = | - | 2 | + | 22 |
- | 2 | x | = | - | 2 | + | 22 |
- | 2 | x | = | 20 |
- | 20 | = | 2 | x |
2 | x | = | - | 20 |
x | = | - | 20 | ÷ | 2 |
= | - | 20 | × | 1 2 |
= | - | 10 | × | 1 |
x | = | - | 10 |