13 | ( | 32 100 | − | x% | ) | = | 12 | x |
方程左边 = | 13 | × | 32 100 | − | 13 | × | x% |
= | 104 25 | − | 13 100 | x |
104 25 | − | 13 100 | x | = | 12 | x |
- | 13 100 | x | − | 12 | x | = | - | 104 25 |
- | 1213 100 | x | = | - | 104 25 |
104 25 | = | 1213 100 | x |
1213 100 | x | = | 104 25 |
x | = | 104 25 | ÷ | 1213 100 |
= | 104 25 | × | 100 1213 |
= | 104 | × | 4 1213 |
x | = | 416 1213 |
x | = | 0.342951 |