( | X | − | 200 | ) | × | 3 4 | ÷ | 3300 | = | ( | X | − | 200 | − | 150 | ) | × | 3 4 | ÷ | 3000 |
方程左边 = | ( | X | − | 200 | ) | × | 1 4400 |
( | X | − | 200 | ) | × | 1 4400 | = | ( | X | − | 200 | − | 150 | ) | × | 3 4 | ÷ | 3000 |
方程左边 = | X | × | 1 4400 | − | 200 | × | 1 4400 |
= | X | × | 1 4400 | − | 1 22 |
1 4400 | X | − | 1 22 | = | ( | X | − | 200 | − | 150 | ) | × | 3 4 | ÷ | 3000 |
方程右边 = | ( | X | − | 200 | − | 150 | ) | × | 1 4000 |
1 4400 | X | − | 1 22 | = | ( | X | − | 200 | − | 150 | ) | × | 1 4000 |
方程右边 = | X | × | 1 4000 | − | 200 | × | 1 4000 | − | 150 | × | 1 4000 |
= | X | × | 1 4000 | − | 1 20 | − | 3 80 |
= | 1 4000 | X | − | 7 80 |
1 4400 | X | − | 1 22 | = | 1 4000 | X | − | 7 80 |
1 4400 | X | − | 1 4000 | X | = | - | 7 80 | + | 1 22 |
- | 1 44000 | X | = | - | 7 80 | + | 1 22 |
- | 1 44000 | X | = | - | 37 880 |
37 880 | = | 1 44000 | X |
1 44000 | X | = | 37 880 |
X | = | 37 880 | ÷ | 1 44000 |
= | 37 880 | × | 44000 |
= | 37 | × | 50 |
X | = | 1850 |