12 | = | ( | 44 | X | ) | ÷ | 24 | × | ( | X | − | X | ÷ | 7 5 | ) | × | 7 5 | ÷ | 18 |
方程右边 = | ( | 44 | X | ) | × | 7 2160 | ( | X | − | X | ÷ | 7 5 | ) |
12 | = | ( | 44 | X | ) | × | 7 2160 | ( | X | − | X | ÷ | 7 5 | ) |
方程右边 = | 44 | X | × | 7 2160 | ( | X | − | X | ÷ | 7 5 | ) |
= | 77 540 | X | ( | X | − | X | ÷ | 7 5 | ) |
= | 77 540 | X | X | − | 77 540 | X | X | ÷ | 7 5 |
= | 77 540 | X | X | − | 11 108 | X | X |
12 | = | 77 540 | X | X | − | 11 108 | X | X |
X1= | - | √3240 √11 |
X2= | √3240 √11 |