( | x | − | 300 | ) | ( | 1 | − | 1 4 | ) | ÷ | 3300 | = | ( | ( | x | − | 300 | ) | ( | 1 | − | 1 4 | ) | − | 75 | ) | ÷ | 3150 |
方程左边 = | x | ( | 1 | − | 1 4 | ) | × | 1 3300 | − | 300 | ( | 1 | − | 1 4 | ) | × | 1 3300 |
= | x | ( | 1 | − | 1 4 | ) | × | 1 3300 | − | 1 11 | ( | 1 | − | 1 4 | ) |
= | x | × | 1 | × | 1 3300 | − | x | × | 1 4 | × | 1 3300 | − | 1 11 | ( | 1 | − | 1 4 | ) |
= | x | × | 1 3300 | − | x | × | 1 13200 | − | 1 11 | ( | 1 | − | 1 4 | ) |
= | 1 4400 | x | − | 1 11 | ( | 1 | − | 1 4 | ) |
= | 1 4400 | x | − | 1 11 | × | 1 | + | 1 11 | × | 1 4 |
= | 1 4400 | x | − | 1 11 | + | 1 44 |
= | 1 4400 | x | − | 3 44 |
1 4400 | x | − | 3 44 | = | ( | ( | x | − | 300 | ) | ( | 1 | − | 1 4 | ) | − | 75 | ) | ÷ | 3150 |
方程右边 = | ( | x | − | 300 | ) | ( | 1 | − | 1 4 | ) | × | 1 3150 | − | 75 | × | 1 3150 |
= | ( | x | − | 300 | ) | ( | 1 | − | 1 4 | ) | × | 1 3150 | − | 1 42 |
= | x | ( | 1 | − | 1 4 | ) | × | 1 3150 | − | 300 | ( | 1 | − | 1 4 | ) | × | 1 3150 | − | 1 42 |
= | x | ( | 1 | − | 1 4 | ) | × | 1 3150 | − | 2 21 | ( | 1 | − | 1 4 | ) | − | 1 42 |
= | x | × | 1 | × | 1 3150 | − | x | × | 1 4 | × | 1 3150 | − | 2 21 | ( | 1 | − | 1 4 | ) | − | 1 42 |
= | x | × | 1 3150 | − | x | × | 1 12600 | − | 2 21 | ( | 1 | − | 1 4 | ) | − | 1 42 |
= | 1 4200 | x | − | 2 21 | ( | 1 | − | 1 4 | ) | − | 1 42 |
= | 1 4200 | x | − | 2 21 | × | 1 | + | 2 21 | × | 1 4 | − | 1 42 |
= | 1 4200 | x | − | 2 21 | + | 1 42 | − | 1 42 |
= | 1 4200 | x | − | 2 21 |
1 4400 | x | − | 3 44 | = | 1 4200 | x | − | 2 21 |
1 4400 | x | − | 1 4200 | x | = | - | 2 21 | + | 3 44 |
- | 1 92400 | x | = | - | 2 21 | + | 3 44 |
- | 1 92400 | x | = | - | 25 924 |
25 924 | = | 1 92400 | x |
1 92400 | x | = | 25 924 |
x | = | 25 924 | ÷ | 1 92400 |
= | 25 924 | × | 92400 |
= | 25 | × | 100 |
x | = | 2500 |