( | x | × | 13 100 | − | 9 100 | ) | × | 12 100 | = | 1 |
方程左边 = | x | × | 13 100 | × | 12 100 | − | 9 100 | × | 12 100 |
= | x | × | 39 2500 | − | 27 2500 |
39 2500 | x | − | 27 2500 | = | 1 |
39 2500 | x | = | 1 | + | 27 2500 |
39 2500 | x | = | 2527 2500 |
x | = | 2527 2500 | ÷ | 39 2500 |
= | 2527 2500 | × | 2500 39 |
= | 2527 | × | 1 39 |
x | = | 2527 39 |
x | = | 64.794872 |