2 | ÷ | 3 | = | a | ( | 7 4 | − | 4 | ) | ( | 7 4 | − | 4 | ) | + | 3 |
方程左边 = | 2 3 |
2 3 | = | a | ( | 7 4 | − | 4 | ) | ( | 7 4 | − | 4 | ) | + | 3 |
方程右边 = | a | × | 7 4 | ( | 7 4 | − | 4 | ) | − | a | × | 4 | ( | 7 4 | − | 4 | ) | + | 3 |
= | a | × | 7 4 | × | 7 4 | − | a | × | 7 4 | × | 4 | − | a | × | 4 | ( | 7 4 | − | 4 | ) | + | 3 |
= | a | × | 49 16 | − | a | × | 7 | − | a | × | 4 | ( | 7 4 | − | 4 | ) | + | 3 |
= | - | 63 16 | a | − | a | × | 4 | ( | 7 4 | − | 4 | ) | + | 3 |
= | - | 63 16 | a | − | a | × | 4 | × | 7 4 | + | a | × | 4 | × | 4 | + | 3 |
= | - | 63 16 | a | − | a | × | 7 | + | a | × | 16 | + | 3 |
= | 81 16 | a | + | 3 |
2 3 | = | 81 16 | a | + | 3 |
- | 81 16 | a | = | 3 | − | 2 3 |
- | 81 16 | a | = | 7 3 |
- | 7 3 | = | 81 16 | a |
81 16 | a | = | - | 7 3 |
a | = | - | 7 3 | ÷ | 81 16 |
= | - | 7 3 | × | 16 81 |
a | = | - | 112 243 |
a | = | - 0.460905 |