A | = | 29498400 | + | 665856 | + | 10000000 | × | 1 200 | + | 20000000 | × | 1 500 | + | ( | A | − | 30000000 | ) | × | 3 2000 | + | ( | A | − | 29498400 | ) | × | 3 50 | + | A | × | 9 1250 |
方程右边 = | 29498400 | + | 665856 | + | 50000 | + | 40000 | + | ( | A | − | 30000000 | ) | × | 3 2000 | + | ( | A | − | 29498400 | ) | × | 3 50 | + | A | × | 9 1250 |
= | 30254256 | + | ( | A | − | 30000000 | ) | × | 3 2000 | + | ( | A | − | 29498400 | ) | × | 3 50 | + | 9 1250 | A |
A | = | 30254256 | + | ( | A | − | 30000000 | ) | × | 3 2000 | + | ( | A | − | 29498400 | ) | × | 3 50 | + | 9 1250 | A |
方程右边 = | 30254256 | + | A | × | 3 2000 | − | 30000000 | × | 3 2000 | + | ( | A | − | 29498400 | ) | × | 3 50 | + | 9 1250 | A |
= | 30254256 | + | A | × | 3 2000 | − | 45000 | + | ( | A | − | 29498400 | ) | × | 3 50 | + | 9 1250 | A |
= | 30209256 | + | 87 10000 | A | + | ( | A | − | 29498400 | ) | × | 3 50 |
= | 30209256 | + | 87 10000 | A | + | A | × | 3 50 | − | 29498400 | × | 3 50 |
= | 30209256 | + | 87 10000 | A | + | A | × | 3 50 | − | 1769904 |
= | 28439352 | + | 687 10000 | A |
A | = | 28439352 | + | 687 10000 | A |
A | − | 687 10000 | A | = | 28439352 |
9313 10000 | A | = | 28439352 |
A | = | 28439352 | ÷ | 9313 10000 |
= | 28439352 | × | 10000 9313 |
A | = | 284393520000 9313 |