( | 8980 | + | 30 | + | X | ) | × | 17 500 | = | 4 | X |
方程左边 = | 8980 | × | 17 500 | + | 30 | × | 17 500 | + | X | × | 17 500 |
= | 7633 25 | + | 51 50 | + | X | × | 17 500 |
= | 15317 50 | + | 17 500 | X |
15317 50 | + | 17 500 | X | = | 4 | X |
17 500 | X | − | 4 | X | = | - | 15317 50 |
- | 1983 500 | X | = | - | 15317 50 |
15317 50 | = | 1983 500 | X |
1983 500 | X | = | 15317 50 |
X | = | 15317 50 | ÷ | 1983 500 |
= | 15317 50 | × | 500 1983 |
= | 15317 | × | 10 1983 |
X | = | 153170 1983 |
X | = | 77.241553 |