21 100 | = | x | + | ( | x | − | 781 10000 | ) | × | 41 40 |
方程右边 = | x | + | x | × | 41 40 | − | 781 10000 | × | 41 40 |
= | x | + | x | × | 41 40 | − | 32021 400000 |
= | 81 40 | x | − | 32021 400000 |
21 100 | = | 81 40 | x | − | 32021 400000 |
- | 81 40 | x | = | - | 32021 400000 | − | 21 100 |
- | 81 40 | x | = | - | 116021 400000 |
116021 400000 | = | 81 40 | x |
81 40 | x | = | 116021 400000 |
x | = | 116021 400000 | ÷ | 81 40 |
= | 116021 400000 | × | 40 81 |
= | 116021 10000 | × | 1 81 |
x | = | 116021 810000 |
x | = | 0.143236 |