3 5 | ( | 1 | + | g | ) | ÷ | 12 | × | ( | 1 | − | 6 100 | ) | + | g | = | 0 |
| 方程左边 = | 1 20 | ( | 1 | + | g | ) | ( | 1 | − | 6 100 | ) | + | g |
1 20 | ( | 1 | + | g | ) | ( | 1 | − | 6 100 | ) | + | g | = | 0 |
| 方程左边 = | 1 20 | × | 1 | ( | 1 | − | 6 100 | ) | + | 1 20 | g | ( | 1 | − | 6 100 | ) | + | g |
| = | 1 20 | ( | 1 | − | 6 100 | ) | + | 1 20 | g | ( | 1 | − | 6 100 | ) | + | g |
| = | 1 20 | × | 1 | − | 1 20 | × | 6 100 | + | 1 20 | g | ( | 1 | − | 6 100 | ) | + | g |
| = | 1 20 | − | 3 1000 | + | 1 20 | g | ( | 1 | − | 6 100 | ) | + | g |
| = | 47 1000 | + | 1 20 | g | ( | 1 | − | 6 100 | ) | + | g |
| = | 47 1000 | + | 1 20 | g | × | 1 | − | 1 20 | g | × | 6 100 | + | g |
| = | 47 1000 | + | 1 20 | g | − | 3 1000 | g | + | g |
| = | 47 1000 | + | 1047 1000 | g |
47 1000 | + | 1047 1000 | g | = | 0 |
1047 1000 | g | = | 0 | − | 47 1000 |
1047 1000 | g | = | - | 47 1000 |
| g | = | - | 47 1000 | ÷ | 1047 1000 |
| = | - | 47 1000 | × | 1000 1047 |
| = | - | 47 | × | 1 1047 |
| g | = | - | 47 1047 |
| g | = | - 0.04489 |