3 | ÷ | 315 | + | 12 | ÷ | 6679 50 | + | 7 | ÷ | 53 | + | X | ÷ | 500 | + | ( | 75 | − | X | ) | ÷ | 1000 | = | 317 1000 |
方程左边 = | 1 105 | + | 600 6679 | + | 7 53 | + | X | × | 1 500 | + | ( | 75 | − | X | ) | × | 1 1000 |
= | 8602052 37168635 | + | 1 500 | X | + | ( | 75 | − | X | ) | × | 1 1000 |
8602052 37168635 | + | 1 500 | X | + | ( | 75 | − | X | ) | × | 1 1000 | = | 317 1000 |
方程左边 = | 8602052 37168635 | + | 1 500 | X | + | 75 | × | 1 1000 | − | X | × | 1 1000 |
= | 8602052 37168635 | + | 1 500 | X | + | 3 40 | − | X | × | 1 1000 |
= | 91117597 297349080 | + | 1 1000 | X |
91117597 297349080 | + | 1 1000 | X | = | 317 1000 |
1 1000 | X | = | 317 1000 | − | 91117597 297349080 |
X= | √97702163 √875000 |