( | ( | 1 | × | 9 10 | ) | + | X | ) | × | 51 50 | = | 1 | + | X |
方程左边 = | ( | 1 | × | 9 10 | ) | × | 51 50 | + | X | × | 51 50 |
= | 1 | × | 9 10 | × | 51 50 | + | 51 50 | X |
= | 459 500 | + | 51 50 | X |
459 500 | + | 51 50 | X | = | 1 | + | X |
51 50 | X | − | X | = | 1 | − | 459 500 |
1 50 | X | = | 1 | − | 459 500 |
1 50 | X | = | 41 500 |
X | = | 41 500 | ÷ | 1 50 |
= | 41 500 | × | 50 |
= | 41 10 | × | 1 |
X | = | 41 10 |
X | = | 4.1 |