3 5 | ( | 1 | + | g | ) | ÷ | 12 | + | g | = | 0 |
方程左边 = | 1 20 | ( | 1 | + | g | ) | + | g |
1 20 | ( | 1 | + | g | ) | + | g | = | 0 |
方程左边 = | 1 20 | × | 1 | + | 1 20 | g | + | g |
= | 1 20 | + | 1 20 | g | + | g |
= | 1 20 | + | 21 20 | g |
1 20 | + | 21 20 | g | = | 0 |
21 20 | g | = | 0 | − | 1 20 |
21 20 | g | = | - | 1 20 |
g | = | - | 1 20 | ÷ | 21 20 |
= | - | 1 20 | × | 20 21 |
= | - | 1 | × | 1 21 |
g | = | - | 1 21 |
g | = | - 0.047619 |