( | 1 2 | × | 3 10 | ) | ÷ | ( | 100 | + | 3 10 | a | ) | + | ( | 1 2 | × | 1 20 | ) | ÷ | ( | 100 | + | 1 20 | a | ) | = | 0 |
方程两边同时乘以: | ( | 100 | + | 3 10 | a | ) |
( | 1 2 | × | 3 10 | ) | + | ( | 1 2 | × | 1 20 | ) | ÷ | ( | 100 | + | 1 20 | a | ) | × | ( | 100 | + | 3 10 | a | ) | = | 0 |
1 2 | × | 3 10 | + | ( | 1 2 | × | 1 20 | ) | ÷ | ( | 100 | + | 1 20 | a | ) | × | ( | 100 | + | 3 10 | a | ) | = | 0 |
3 20 | + | ( | 1 2 | × | 1 20 | ) | ÷ | ( | 100 | + | 1 20 | a | ) | × | ( | 100 | + | 3 10 | a | ) | = | 0 |
方程两边同时乘以: | ( | 100 | + | 1 20 | a | ) |
3 20 | ( | 100 | + | 1 20 | a | ) | + | ( | 1 2 | × | 1 20 | ) | ( | 100 | + | 3 10 | a | ) | = | 0 |
3 20 | × | 100 | + | 3 20 | × | 1 20 | a | + | ( | 1 2 | × | 1 20 | ) | ( | 100 | + | 3 10 | a | ) | = | 0 |
15 | + | 3 400 | a | + | ( | 1 2 | × | 1 20 | ) | ( | 100 | + | 3 10 | a | ) | = | 0 |
15 | + | 3 400 | a | + | 1 2 | × | 1 20 | ( | 100 | + | 3 10 | a | ) | = | 0 |
15 | + | 3 400 | a | + | 1 40 | ( | 100 | + | 3 10 | a | ) | = | 0 |
15 | + | 3 400 | a | + | 1 40 | × | 100 | + | 1 40 | × | 3 10 | a | = | 0 |
15 | + | 3 400 | a | + | 5 2 | + | 3 400 | a | = | 0 |
35 2 | + | 3 200 | a | = | 0 |
3 200 | a | = | 0 | − | 35 2 |
3 200 | a | = | - | 35 2 |
a | = | - | 35 2 | ÷ | 3 200 |
= | - | 35 2 | × | 200 3 |
= | - | 35 | × | 100 3 |
a | = | - | 3500 3 |
a | = | - 1166.666667 |