21 200 | = | 11 10 | ( | 1 | + | X | ) | ÷ | 72 5 | + | X |
方程右边 = | 11 144 | ( | 1 | + | X | ) | + | X |
21 200 | = | 11 144 | ( | 1 | + | X | ) | + | X |
方程右边 = | 11 144 | × | 1 | + | 11 144 | X | + | X |
= | 11 144 | + | 11 144 | X | + | X |
= | 11 144 | + | 155 144 | X |
21 200 | = | 11 144 | + | 155 144 | X |
- | 155 144 | X | = | 11 144 | − | 21 200 |
- | 155 144 | X | = | - | 103 3600 |
103 3600 | = | 155 144 | X |
155 144 | X | = | 103 3600 |
X | = | 103 3600 | ÷ | 155 144 |
= | 103 3600 | × | 144 155 |
= | 103 25 | × | 1 155 |
X | = | 103 3875 |
X | = | 0.026581 |