( | ( | 1 | × | 9 10 | ) | + | X | ) | × | 101 100 | = | 1 |
方程左边 = | ( | 1 | × | 9 10 | ) | × | 101 100 | + | X | × | 101 100 |
= | 1 | × | 9 10 | × | 101 100 | + | 101 100 | X |
= | 909 1000 | + | 101 100 | X |
909 1000 | + | 101 100 | X | = | 1 |
101 100 | X | = | 1 | − | 909 1000 |
101 100 | X | = | 91 1000 |
X | = | 91 1000 | ÷ | 101 100 |
= | 91 1000 | × | 100 101 |
= | 91 10 | × | 1 101 |
X | = | 91 1010 |
X | = | 0.090099 |