580 | ÷ | ( | X | − | 40 | − | ( | X | × | 13 100 | − | 5 | ) | × | 12 100 | ) | = | 100 |
方程两边同时乘以: | ( | X | − | 40 | − | ( | X | × | 13 100 | − | 5 | ) | × | 12 100 | ) |
580 | = | 100 | ( | X | − | 40 | − | ( | X | × | 13 100 | − | 5 | ) | × | 12 100 | ) |
580 | = | 100 | X | − | 100 | × | 40 | − | 100 | ( | X | × | 13 100 | − | 5 | ) | × | 12 100 |
580 | = | 100 | X | − | 4000 | − | 12 | ( | X | × | 13 100 | − | 5 | ) |
580 | = | 100 | X | − | 4000 | − | 12 | X | × | 13 100 | + | 12 | × | 5 |
580 | = | 100 | X | − | 4000 | − | 39 25 | X | + | 60 |
580 | = | 2461 25 | X | − | 3940 |
- | 2461 25 | X | = | - | 3940 | − | 580 |
- | 2461 25 | X | = | - | 4520 |
4520 | = | 2461 25 | X |
2461 25 | X | = | 4520 |
X | = | 4520 | ÷ | 2461 25 |
= | 4520 | × | 25 2461 |
X | = | 113000 2461 |
X | = | 45.916294 |