( | 27999 5 | − | y | ) | ÷ | y | = | 5 200 |
方程两边同时乘以: | y |
( | 27999 5 | − | y | ) | = | 5 200 | y |
27999 5 | − | y | = | 5 200 | y |
- | y | − | 5 200 | y | = | - | 27999 5 |
- | 41 40 | y | = | - | 27999 5 |
27999 5 | = | 41 40 | y |
41 40 | y | = | 27999 5 |
y | = | 27999 5 | ÷ | 41 40 |
= | 27999 5 | × | 40 41 |
= | 27999 | × | 8 41 |
y | = | 223992 41 |
y | = | 5463.219512 |