( | X | − | 200 | ) | ( | 1 | − | 1 4 | ) | ÷ | 3300 | = | 0 |
方程左边 = | X | ( | 1 | − | 1 4 | ) | × | 1 3300 | − | 200 | ( | 1 | − | 1 4 | ) | × | 1 3300 |
= | X | ( | 1 | − | 1 4 | ) | × | 1 3300 | − | 2 33 | ( | 1 | − | 1 4 | ) |
= | X | × | 1 | × | 1 3300 | − | X | × | 1 4 | × | 1 3300 | − | 2 33 | ( | 1 | − | 1 4 | ) |
= | X | × | 1 3300 | − | X | × | 1 13200 | − | 2 33 | ( | 1 | − | 1 4 | ) |
= | 1 4400 | X | − | 2 33 | ( | 1 | − | 1 4 | ) |
= | 1 4400 | X | − | 2 33 | × | 1 | + | 2 33 | × | 1 4 |
= | 1 4400 | X | − | 2 33 | + | 1 66 |
= | 1 4400 | X | − | 1 22 |
1 4400 | X | − | 1 22 | = | 0 |
1 4400 | X | = | 0 | + | 1 22 |
1 4400 | X | = | 1 22 |
X | = | 1 22 | ÷ | 1 4400 |
= | 1 22 | × | 4400 |
= | 1 | × | 200 |
X | = | 200 |