X | ÷ | 87 | + | 20 | ÷ | 135 | − | ( | 72 | − | X | ) | ÷ | 2000 | = | 33 100 |
方程左边 = | X | × | 1 87 | + | 4 27 | − | ( | 72 | − | X | ) | × | 1 2000 |
1 87 | X | + | 4 27 | − | ( | 72 | − | X | ) | × | 1 2000 | = | 33 100 |
方程左边 = | 1 87 | X | + | 4 27 | − | 72 | × | 1 2000 | + | X | × | 1 2000 |
= | 1 87 | X | + | 4 27 | − | 9 250 | + | X | × | 1 2000 |
= | 2087 174000 | X | + | 757 6750 |
2087 174000 | X | + | 757 6750 | = | 33 100 |
2087 174000 | X | = | 33 100 | − | 757 6750 |
2087 174000 | X | = | 2941 13500 |
X | = | 2941 13500 | ÷ | 2087 174000 |
= | 2941 13500 | × | 174000 2087 |
= | 2941 9 | × | 116 2087 |
X | = | 341156 18783 |
X | = | 18.16302 |