( | 29 | + | x | ) | ÷ | ( | 30 | + | x | ) | = | 97 100 |
方程两边同时乘以: | ( | 30 | + | x | ) |
( | 29 | + | x | ) | = | 97 100 | ( | 30 | + | x | ) |
29 | + | x | = | 97 100 | ( | 30 | + | x | ) |
29 | + | x | = | 97 100 | × | 30 | + | 97 100 | x |
29 | + | x | = | 291 10 | + | 97 100 | x |
x | − | 97 100 | x | = | 291 10 | − | 29 |
3 100 | x | = | 291 10 | − | 29 |
3 100 | x | = | 1 10 |
x | = | 1 10 | ÷ | 3 100 |
= | 1 10 | × | 100 3 |
= | 1 | × | 10 3 |
x | = | 10 3 |
x | = | 3.333333 |