( | ( | 812371 20 | + | a | + | 10000 | ) | − | 25000 | ) | × | 3 100 | = | 12371 20 | + | a |
方程左边 = | ( | 812371 20 | + | a | + | 10000 | ) | × | 3 100 | − | 25000 | × | 3 100 |
= | ( | 812371 20 | + | a | + | 10000 | ) | × | 3 100 | − | 750 |
= | 812371 20 | × | 3 100 | + | a | × | 3 100 | + | 10000 | × | 3 100 | − | 750 |
= | 2437113 2000 | + | a | × | 3 100 | + | 300 | − | 750 |
= | 1537113 2000 | + | 3 100 | a |
1537113 2000 | + | 3 100 | a | = | 12371 20 | + | a |
3 100 | a | − | a | = | 12371 20 | − | 1537113 2000 |
- | 97 100 | a | = | 12371 20 | − | 1537113 2000 |
- | 97 100 | a | = | - | 300013 2000 |
300013 2000 | = | 97 100 | a |
97 100 | a | = | 300013 2000 |
a | = | 300013 2000 | ÷ | 97 100 |
= | 300013 2000 | × | 100 97 |
= | 300013 20 | × | 1 97 |
a | = | 300013 1940 |
a | = | 154.645876 |