56 | X | − | ( | 580 | + | 40 | X | ) | − | ( | 56 | X | × | 13 100 | − | 5 | X | ) | × | 12 100 | = | 0 |
方程左边 = | 56 | X | − | 580 | − | 40 | X | − | ( | 56 | X | × | 13 100 | − | 5 | X | ) | × | 12 100 |
= | 16 | X | − | 580 | − | ( | 56 | X | × | 13 100 | − | 5 | X | ) | × | 12 100 |
= | 16 | X | − | 580 | − | 56 | X | × | 13 100 | × | 12 100 | + | 5 | X | × | 12 100 |
= | 16 | X | − | 580 | − | 546 625 | X | + | 3 5 | X |
= | 9829 625 | X | − | 580 |
9829 625 | X | − | 580 | = | 0 |
9829 625 | X | = | 0 | + | 580 |
9829 625 | X | = | 580 |
X | = | 580 | ÷ | 9829 625 |
= | 580 | × | 625 9829 |
X | = | 362500 9829 |
X | = | 36.880659 |