2 | − | 3 | ( | t | − | 4 | ) | = | - | 2 | − | 2 | ( | t | − | 4 | ) |
方程左边 = | 2 | − | 3 | t | + | 3 | × | 4 |
= | 2 | − | 3 | t | + | 12 |
= | 14 | − | 3 | t |
14 | − | 3 | t | = | - | 2 | − | 2 | ( | t | − | 4 | ) |
方程右边 = | - | 2 | − | 2 | t | + | 2 | × | 4 |
= | - | 2 | − | 2 | t | + | 8 |
= | 6 | − | 2 | t |
14 | − | 3 | t | = | 6 | − | 2 | t |
- | 3 | t | + | 2 | t | = | 6 | − | 14 |
- | t | = | 6 | − | 14 |
- | t | = | 6 | − | 14 |
- | t | = | - | 8 |
8 | = | t |
t | = | 8 |