y | − | ( | y | − | 1 | ) | ÷ | 2 | = | - | 2 | − | ( | y | + | 2 | ) | ÷ | 3 |
方程左边 = | y | − | y | × | 1 2 | + | 1 | × | 1 2 |
= | y | − | y | × | 1 2 | + | 1 2 |
= | 1 2 | y | + | 1 2 |
1 2 | y | + | 1 2 | = | - | 2 | − | ( | y | + | 2 | ) | ÷ | 3 |
方程右边 = | - | 2 | − | y | × | 1 3 | − | 2 | × | 1 3 |
= | - | 2 | − | y | × | 1 3 | − | 2 3 |
= | - | 8 3 | − | 1 3 | y |
1 2 | y | + | 1 2 | = | - | 8 3 | − | 1 3 | y |
1 2 | y | + | 1 3 | y | = | - | 8 3 | − | 1 2 |
5 6 | y | = | - | 8 3 | − | 1 2 |
5 6 | y | = | - | 19 6 |
y | = | - | 19 6 | ÷ | 5 6 |
= | - | 19 6 | × | 6 5 |
= | - | 19 | × | 1 5 |
y | = | - | 19 5 |
y | = | - 3.8 |