2 | ( | X | − | 1 | ) | + | 7 | = | 4 | ( | X | + | 1 2 | ) |
Left side of the equation = | 2 | X | − | 2 | × | 1 | + | 7 |
= | 2 | X | − | 2 | + | 7 |
= | 2 | X | + | 5 |
2 | X | + | 5 | = | 4 | ( | X | + | 1 2 | ) |
Right side of the equation = | 4 | X | + | 4 | × | 1 2 |
= | 4 | X | + | 2 |
2 | X | + | 5 | = | 4 | X | + | 2 |
2 | X | − | 4 | X | = | 2 | − | 5 |
- | 2 | X | = | 2 | − | 5 |
- | 2 | X | = | - | 3 |
3 | = | 2 | X |
2 | X | = | 3 |
X | = | 3 | ÷ | 2 |
= | 3 | × | 1 2 |
X | = | 3 2 |
X | = | 1.5 |