( | 1 | ÷ | ( | 1 100 | − | 33 10 | a | ) | − | 1 | ÷ | ( | 1 100 | − | 21 5 | a | ) | ) | ÷ | 1 2 | = | 0 |
1 | ÷ | ( | 1 100 | − | 33 10 | a | ) | ÷ | 1 2 | − | 1 | ÷ | ( | 1 100 | − | 21 5 | a | ) | ÷ | 1 2 | = | 0 |
2 | ÷ | ( | 1 100 | − | 33 10 | a | ) | − | 2 | ÷ | ( | 1 100 | − | 21 5 | a | ) | = | 0 |
方程两边同时乘以: | ( | 1 100 | − | 33 10 | a | ) |
2 | − | 2 | ÷ | ( | 1 100 | − | 21 5 | a | ) | × | ( | 1 100 | − | 33 10 | a | ) | = | 0 |
2 | − | 2 | ÷ | ( | 1 100 | − | 21 5 | a | ) | × | 1 100 | + | 2 | ÷ | ( | 1 100 | − | 21 5 | a | ) | × | 33 10 | a | = | 0 |
2 | − | 1 50 | ÷ | ( | 1 100 | − | 21 5 | a | ) | + | 33 5 | ÷ | ( | 1 100 | − | 21 5 | a | ) | × | a | = | 0 |
方程两边同时乘以: | ( | 1 100 | − | 21 5 | a | ) |
2 | ( | 1 100 | − | 21 5 | a | ) | − | 1 50 | + | 33 5 | a | = | 0 |
2 | × | 1 100 | − | 2 | × | 21 5 | a | − | 1 50 | + | 33 5 | a | = | 0 |
1 50 | − | 42 5 | a | − | 1 50 | + | 33 5 | a | = | 0 |
0 | − | 9 5 | a | = | 0 |
- | 0 | = | 9 5 | a |
9 5 | a | = | - | 0 |
a | = | - | 0 | ÷ | 9 5 |
= | - | 0 | × | 5 9 |
a | = | 0 |