X | ÷ | 87 | − | ( | 100 | − | X | ) | ÷ | 125 | = | 73 100 |
方程左边 = | 1 87 | X | − | 100 | × | 1 125 | + | X | × | 1 125 |
= | 1 87 | X | − | 4 5 | + | X | × | 1 125 |
= | 212 10875 | X | − | 4 5 |
212 10875 | X | − | 4 5 | = | 73 100 |
212 10875 | X | = | 73 100 | + | 4 5 |
212 10875 | X | = | 153 100 |
X | = | 153 100 | ÷ | 212 10875 |
= | 153 100 | × | 10875 212 |
= | 153 4 | × | 435 212 |
X | = | 66555 848 |
X | = | 78.48467 |