20 | ( | 1 | + | 2 | t | ) | ( | 1 | − | 3 10 | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 1 4 | t | ) | = | ( | 20 | ( | 1 | + | 2 | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
方程左边 = | 20 | × | 1 | ( | 1 | − | 3 10 | t | ) | + | 20 | × | 2 | t | ( | 1 | − | 3 10 | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 1 4 | t | ) |
= | 20 | ( | 1 | − | 3 10 | t | ) | + | 40 | t | ( | 1 | − | 3 10 | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 1 4 | t | ) |
= | 20 | × | 1 | − | 20 | × | 3 10 | t | + | 40 | t | ( | 1 | − | 3 10 | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 1 4 | t | ) |
= | 20 | − | 6 | t | + | 40 | t | ( | 1 | − | 3 10 | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 1 4 | t | ) |
= | 20 | − | 6 | t | + | 40 | t | × | 1 | − | 40 | t | × | 3 10 | t | + | 8 | ( | 1 | + | 6 | t | ) |
= | 20 | − | 6 | t | + | 40 | t | − | 12 | t | t | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 1 4 | t | ) |
= | 20 | + | 34 | t | − | 12 | t | t | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 1 4 | t | ) |
= | 20 | + | 34 | t | − | 12 | t | t | + | 8 | × | 1 | ( | 1 | − | 1 4 | t | ) | + | 8 | × | 6 | t |
= | 20 | + | 34 | t | − | 12 | t | t | + | 8 | ( | 1 | − | 1 4 | t | ) | + | 48 | t | ( | 1 | − | 1 4 | t | ) |
= | 20 | + | 34 | t | − | 12 | t | t | + | 8 | × | 1 | − | 8 | × | 1 4 | t | + | 48 |
= | 20 | + | 34 | t | − | 12 | t | t | + | 8 | − | 2 | t | + | 48 | t | ( | 1 | − | 1 4 | t | ) |
= | 28 | + | 32 | t | − | 12 | t | t | + | 48 | t | ( | 1 | − | 1 4 | t | ) |
= | 28 | + | 32 | t | − | 12 | t | t | + | 48 | t | × | 1 | − | 48 | t | × | 1 4 |
= | 28 | + | 32 | t | − | 12 | t | t | + | 48 | t | − | 12 | t | t |
= | 28 | + | 80 | t | − | 12 | t | t | − | 12 | t | t |
28 | + | 80 | t | − | 12 | t | t | − | 12 | t | t | = | ( | 20 | ( | 1 | + | 2 | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
方程右边 = | 20 | ( | 1 | + | 2 | t | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
= | 20 | × | 1 | ( | 1 | − | 5 | ÷ | 18 | × | t | ) | + | 20 | × | 2 | t | ( | 1 | − | 5 | ÷ | 18 | × | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
= | 20 | ( | 1 | − | 5 | ÷ | 18 | × | t | ) | + | 40 | t | ( | 1 | − | 5 | ÷ | 18 | × | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
= | 20 | × | 1 | − | 20 | × | 5 | ÷ | 18 | × | t | + | 40 | t | ( | 1 | − | 5 | ÷ | 18 | × | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
= | 20 | − | 50 9 | t | + | 40 | t | ( | 1 | − | 5 | ÷ | 18 | × | t | ) | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
= | 20 | − | 50 9 | t | + | 40 | t | × | 1 | − | 40 | t | × | 5 | ÷ | 18 | × | t | + | 8 |
= | 20 | − | 50 9 | t | + | 40 | t | − | 100 9 | t | t | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
= | 20 | + | 310 9 | t | − | 100 9 | t | t | + | 8 | ( | 1 | + | 6 | t | ) | ( | 1 | − | 5 | ÷ | 18 | × | t | ) |
= | 20 | + | 310 9 | t | − | 100 9 | t | t | + | 8 | × | 1 | ( | 1 | − | 5 | ÷ | 18 | × | t | ) | + | 8 | × | 6 | t |
t2= | 1 2 |