( | X | × | 21 20 | − | ( | 223797 25 | − | 75 | ) | ) | × | 36 5 | × | 1000 | = | 1000000 |
方程左边 = | ( | X | × | 21 20 | − | ( | 223797 25 | − | 75 | ) | ) | × | 7200 |
( | X | × | 21 20 | − | ( | 223797 25 | − | 75 | ) | ) | × | 7200 | = | 1000000 |
方程左边 = | X | × | 21 20 | × | 7200 | − | ( | 223797 25 | − | 75 | ) | × | 7200 |
= | X | × | 7560 | − | ( | 223797 25 | − | 75 | ) | × | 7200 |
= | 7560 | X | − | 223797 25 | × | 7200 | + | 75 | × | 7200 |
= | 7560 | X | − | 64453536 | + | 540000 |
= | 7560 | X | − | 63913536 |
7560 | X | − | 63913536 | = | 1000000 |
7560 | X | = | 1000000 | + | 63913536 |
7560 | X | = | 64913536 |
X | = | 64913536 | ÷ | 7560 |
= | 64913536 | × | 1 7560 |
= | 8114192 | × | 1 945 |
X | = | 8114192 945 |
X | = | 8586.446561 |