X | ÷ | 87 | − | ( | 97 | − | X | ) | ÷ | 100 | = | 73 100 |
方程左边 = | 1 87 | X | − | 97 | × | 1 100 | + | X | × | 1 100 |
= | 1 87 | X | − | 97 100 | + | X | × | 1 100 |
= | 187 8700 | X | − | 97 100 |
187 8700 | X | − | 97 100 | = | 73 100 |
187 8700 | X | = | 73 100 | + | 97 100 |
187 8700 | X | = | 17 10 |
X | = | 17 10 | ÷ | 187 8700 |
= | 17 10 | × | 8700 187 |
= | 1 | × | 870 11 |
X | = | 870 11 |
X | = | 79.090909 |