7 | ÷ | 12 | × | x | + | 12 | = | 3 | ÷ | 5 | × | ( | x | + | 12 | ) |
方程左边 = | 7 12 | x | + | 12 |
7 12 | x | + | 12 | = | 3 | ÷ | 5 | × | ( | x | + | 12 | ) |
方程右边 = | 3 5 | ( | x | + | 12 | ) |
7 12 | x | + | 12 | = | 3 5 | ( | x | + | 12 | ) |
方程右边 = | 3 5 | x | + | 3 5 | × | 12 |
= | 3 5 | x | + | 36 5 |
7 12 | x | + | 12 | = | 3 5 | x | + | 36 5 |
7 12 | x | − | 3 5 | x | = | 36 5 | − | 12 |
- | 1 60 | x | = | 36 5 | − | 12 |
- | 1 60 | x | = | - | 24 5 |
24 5 | = | 1 60 | x |
1 60 | x | = | 24 5 |
x | = | 24 5 | ÷ | 1 60 |
= | 24 5 | × | 60 |
= | 24 | × | 12 |
x | = | 288 |