0 | = | 1 | x | ( | 1 | − | 5 100 | ) | − | ( | 140 | × | 1 | − | 50 | ) |
方程右边 = | 1 | x | × | 1 | − | 1 | x | × | 5 100 | − | ( | 140 | × | 1 | − | 50 | ) |
= | 1 | x | − | 1 20 | x | − | ( | 140 | × | 1 | − | 50 | ) |
= | 19 20 | x | − | ( | 140 | × | 1 | − | 50 | ) |
= | 19 20 | x | − | 140 | × | 1 | + | 50 |
= | 19 20 | x | − | 140 | + | 50 |
= | 19 20 | x | − | 90 |
0 | = | 19 20 | x | − | 90 |
- | 19 20 | x | = | - | 90 | − | 0 |
- | 19 20 | x | = | - | 90 |
90 | = | 19 20 | x |
19 20 | x | = | 90 |
x | = | 90 | ÷ | 19 20 |
= | 90 | × | 20 19 |
x | = | 1800 19 |
x | = | 94.736842 |