| ( | 8 | + | 4 | t | ) | − | ( | - | 10 | − | 2 | t | ) | = | 32 | − | ( | 8 | − | ( | - | 10 | ) | ) |
| 方程左边 = | 8 | + | 4 | t | − | ( | - | 10 | − | 2 | t | ) |
| = | 8 | + | 4 | t | + | 10 | + | 2 | t |
| = | 18 | + | 6 | t |
| 18 | + | 6 | t | = | 32 | − | ( | 8 | − | ( | - | 10 | ) | ) |
| 方程右边 = | 32 | − | 8 | + | ( | - | 10 | ) |
| = | 24 | + | ( | - | 10 | ) |
| = | 24 | − | 10 |
| = | 14 |
| 18 | + | 6 | t | = | 14 |
| 6 | t | = | 14 | − | 18 |
| 6 | t | = | - | 4 |
| t | = | - | 4 | ÷ | 6 |
| = | - | 4 | × | 1 6 |
| = | - | 2 | × | 1 3 |
| t | = | - | 2 3 |
| t | = | - 0.666667 |