20 | × | 30 | − | ( | 20 | x | + | 30 | x | − | x | × | 2 | ) | = | 551 |
方程左边 = | 600 | − | ( | 20 | x | + | 30 | x | − | x | × | 2 | ) |
600 | − | ( | 20 | x | + | 30 | x | − | x | × | 2 | ) | = | 551 |
方程左边 = | 600 | − | 20 | x | − | 30 | x | + | x | × | 2 |
= | 600 | − | 48 | x |
600 | − | 48 | x | = | 551 |
- | 48 | x | = | 551 | − | 600 |
- | 48 | x | = | - | 49 |
49 | = | 48 | x |
48 | x | = | 49 |
x | = | 49 | ÷ | 48 |
= | 49 | × | 1 48 |
x | = | 49 48 |
x | = | 1.020833 |