199 10 | + | ( | X | × | 257 10000 | ) | = | X |
方程左边 = | 199 10 | + | X | × | 257 10000 |
199 10 | + | 257 10000 | X | = | X |
257 10000 | X | − | X | = | - | 199 10 |
- | 9743 10000 | X | = | - | 199 10 |
199 10 | = | 9743 10000 | X |
9743 10000 | X | = | 199 10 |
X | = | 199 10 | ÷ | 9743 10000 |
= | 199 10 | × | 10000 9743 |
= | 199 | × | 1000 9743 |
X | = | 199000 9743 |
X | = | 20.42492 |