( | 5 2 | y | − | y | ) | ÷ | 3 | = | ( | 5 2 | y | + | y | ) | ÷ | 2 | + | 1 |
方程左边 = | 5 2 | y | × | 1 3 | − | y | × | 1 3 |
= | 5 6 | y | − | y | × | 1 3 |
= | 1 2 | y |
1 2 | y | = | ( | 5 2 | y | + | y | ) | ÷ | 2 | + | 1 |
方程右边 = | 5 2 | y | × | 1 2 | + | y | × | 1 2 | + | 1 |
= | 5 4 | y | + | y | × | 1 2 | + | 1 |
= | 7 4 | y | + | 1 |
1 2 | y | = | 7 4 | y | + | 1 |
1 2 | y | − | 7 4 | y | = | 1 |
- | 5 4 | y | = | 1 |
- | 1 | = | 5 4 | y |
5 4 | y | = | - | 1 |
y | = | - | 1 | ÷ | 5 4 |
= | - | 1 | × | 4 5 |
y | = | - | 4 5 |
y | = | - 0.8 |