4 | y | − | 3 | ( | 2 | y | + | 1 | ) | = | 1 | − | 7 | ( | 3 | ÷ | 14 | − | 9 | ) |
方程左边 = | 4 | y | − | 3 | × | 2 | y | − | 3 | × | 1 |
= | 4 | y | − | 6 | y | − | 3 |
= | - | 2 | y | − | 3 |
- | 2 | y | − | 3 | = | 1 | − | 7 | ( | 3 | ÷ | 14 | − | 9 | ) |
方程右边 = | 1 | − | 7 | × | 3 | ÷ | 14 | + | 7 | × | 9 |
= | 1 | − | 3 2 | + | 63 |
= | 125 2 |
- | 2 | y | − | 3 | = | 125 2 |
- | 2 | y | = | 125 2 | + | 3 |
- | 2 | y | = | 131 2 |
- | 131 2 | = | 2 | y |
2 | y | = | - | 131 2 |
y | = | - | 131 2 | ÷ | 2 |
= | - | 131 2 | × | 1 2 |
y | = | - | 131 4 |
y | = | - 32.75 |