X | ÷ | 87 | + | ( | 40 | − | X | ) | ÷ | 126 | − | 11 200 | = | 119 500 |
方程左边 = | 1 87 | X | + | 40 | × | 1 126 | − | X | × | 1 126 | − | 11 200 |
= | 1 87 | X | + | 20 63 | − | X | × | 1 126 | − | 11 200 |
= | 13 3654 | X | + | 3307 12600 |
13 3654 | X | + | 3307 12600 | = | 119 500 |
13 3654 | X | = | 119 500 | − | 3307 12600 |
13 3654 | X | = | - | 1541 63000 |
X | = | - | 1541 63000 | ÷ | 13 3654 |
= | - | 1541 63000 | × | 3654 13 |
= | - | 1541 500 | × | 29 13 |
X | = | - | 44689 6500 |
X | = | - 6.875231 |