( | 100 | + | x | ) | ÷ | ( | 165 | + | x | ) | = | 309 500 |
方程两边同时乘以: | ( | 165 | + | x | ) |
( | 100 | + | x | ) | = | 309 500 | ( | 165 | + | x | ) |
100 | + | x | = | 309 500 | ( | 165 | + | x | ) |
100 | + | x | = | 309 500 | × | 165 | + | 309 500 | x |
100 | + | x | = | 10197 100 | + | 309 500 | x |
x | − | 309 500 | x | = | 10197 100 | − | 100 |
191 500 | x | = | 10197 100 | − | 100 |
191 500 | x | = | 197 100 |
x | = | 197 100 | ÷ | 191 500 |
= | 197 100 | × | 500 191 |
= | 197 | × | 5 191 |
x | = | 985 191 |
x | = | 5.157068 |