( | x | − | 400 | − | 200 | ) | ( | 1 | − | 25 100 | ) | ÷ | 8000 | = | ( | x | − | 400 | − | 450 | ) | ( | 1 | − | 25 100 | ) | ÷ | 7000 |
方程左边 = | x | ( | 1 | − | 25 100 | ) | × | 1 8000 | − | 400 | ( | 1 | − | 25 100 | ) | × | 1 8000 | − | 200 | ( | 1 | − | 25 100 | ) | × | 1 8000 |
= | x | ( | 1 | − | 25 100 | ) | × | 1 8000 | − | 1 20 | ( | 1 | − | 25 100 | ) | − | 1 40 | ( | 1 | − | 25 100 | ) |
= | x | × | 1 | × | 1 8000 | − | x | × | 25 100 | × | 1 8000 | − | 1 20 | ( | 1 | − | 25 100 | ) | − | 1 40 | ( | 1 | − | 25 100 | ) |
= | x | × | 1 8000 | − | x | × | 1 32000 | − | 1 20 | ( | 1 | − | 25 100 | ) | − | 1 40 | ( | 1 | − | 25 100 | ) |
= | 3 32000 | x | − | 1 20 | ( | 1 | − | 25 100 | ) | − | 1 40 | ( | 1 | − | 25 100 | ) |
= | 3 32000 | x | − | 1 20 | × | 1 | + | 1 20 | × | 25 100 | − | 1 40 | ( | 1 | − | 25 100 | ) |
= | 3 32000 | x | − | 1 20 | + | 1 80 | − | 1 40 | ( | 1 | − | 25 100 | ) |
= | 3 32000 | x | − | 3 80 | − | 1 40 | ( | 1 | − | 25 100 | ) |
= | 3 32000 | x | − | 3 80 | − | 1 40 | × | 1 | + | 1 40 | × | 25 100 |
= | 3 32000 | x | − | 3 80 | − | 1 40 | + | 1 160 |
= | 3 32000 | x | − | 9 160 |
3 32000 | x | − | 9 160 | = | ( | x | − | 400 | − | 450 | ) | ( | 1 | − | 25 100 | ) | ÷ | 7000 |
方程右边 = | x | ( | 1 | − | 25 100 | ) | × | 1 7000 | − | 400 | ( | 1 | − | 25 100 | ) | × | 1 7000 | − | 450 | ( | 1 | − | 25 100 | ) | × | 1 7000 |
= | x | ( | 1 | − | 25 100 | ) | × | 1 7000 | − | 2 35 | ( | 1 | − | 25 100 | ) | − | 9 140 | ( | 1 | − | 25 100 | ) |
= | x | × | 1 | × | 1 7000 | − | x | × | 25 100 | × | 1 7000 | − | 2 35 | ( | 1 | − | 25 100 | ) | − | 9 140 | ( | 1 | − | 25 100 | ) |
= | x | × | 1 7000 | − | x | × | 1 28000 | − | 2 35 | ( | 1 | − | 25 100 | ) | − | 9 140 | ( | 1 | − | 25 100 | ) |
= | 3 28000 | x | − | 2 35 | ( | 1 | − | 25 100 | ) | − | 9 140 | ( | 1 | − | 25 100 | ) |
= | 3 28000 | x | − | 2 35 | × | 1 | + | 2 35 | × | 25 100 | − | 9 140 | ( | 1 | − | 25 100 | ) |
= | 3 28000 | x | − | 2 35 | + | 1 70 | − | 9 140 | ( | 1 | − | 25 100 | ) |
= | 3 28000 | x | − | 3 70 | − | 9 140 | ( | 1 | − | 25 100 | ) |
= | 3 28000 | x | − | 3 70 | − | 9 140 | × | 1 | + | 9 140 | × | 25 100 |
= | 3 28000 | x | − | 3 70 | − | 9 140 | + | 9 560 |
= | 3 28000 | x | − | 51 560 |
3 32000 | x | − | 9 160 | = | 3 28000 | x | − | 51 560 |
3 32000 | x | − | 3 28000 | x | = | - | 51 560 | + | 9 160 |
- | 3 224000 | x | = | - | 51 560 | + | 9 160 |
- | 3 224000 | x | = | - | 39 1120 |
39 1120 | = | 3 224000 | x |
3 224000 | x | = | 39 1120 |
x | = | 39 1120 | ÷ | 3 224000 |
= | 39 1120 | × | 224000 3 |
= | 13 | × | 200 |
x | = | 2600 |