( | ( | 0 | + | a | + | 843 | + | 8000 | ) | − | 5000 | − | 843 | ) | × | 3 100 | = | 0 | + | a |
方程左边 = | ( | 0 | + | a | + | 843 | + | 8000 | ) | × | 3 100 | − | 5000 | × | 3 100 | − | 843 | × | 3 100 |
= | ( | 0 | + | a | + | 843 | + | 8000 | ) | × | 3 100 | − | 150 | − | 2529 100 |
= | ( | 0 | + | a | + | 843 | + | 8000 | ) | × | 3 100 | − | 17529 100 |
= | 0 | × | 3 100 | + | a | × | 3 100 | + | 843 | × | 3 100 | + | 8000 | × | 3 100 | − | 17529 100 |
= | 0 | + | a | × | 3 100 | + | 2529 100 | + | 240 | − | 17529 100 |
= | 90 | + | 3 100 | a |
90 | + | 3 100 | a | = | a |
3 100 | a | − | a | = | - | 90 |
- | 97 100 | a | = | - | 90 |
90 | = | 97 100 | a |
97 100 | a | = | 90 |
a | = | 90 | ÷ | 97 100 |
= | 90 | × | 100 97 |
a | = | 9000 97 |
a | = | 92.783505 |