x | − | ( | x | × | 13 100 | − | 9 100 | ) | × | 12 100 | = | 1 |
方程左边 = | x | − | x | × | 13 100 | × | 12 100 | + | 9 100 | × | 12 100 |
= | x | − | x | × | 39 2500 | + | 27 2500 |
= | 2461 2500 | x | + | 27 2500 |
2461 2500 | x | + | 27 2500 | = | 1 |
2461 2500 | x | = | 1 | − | 27 2500 |
2461 2500 | x | = | 2473 2500 |
x | = | 2473 2500 | ÷ | 2461 2500 |
= | 2473 2500 | × | 2500 2461 |
= | 2473 | × | 1 2461 |
x | = | 2473 2461 |
x | = | 1.004876 |