( | 20 100 | × | 10 | + | 75 100 | x | ) | ÷ | ( | 10 | + | x | ) | = | 25 100 |
方程两边同时乘以: | ( | 10 | + | x | ) |
( | 20 100 | × | 10 | + | 75 100 | x | ) | = | 25 100 | ( | 10 | + | x | ) |
20 100 | × | 10 | + | 75 100 | x | = | 25 100 | ( | 10 | + | x | ) |
20 100 | × | 10 | + | 75 100 | x | = | 25 100 | × | 10 | + | 25 100 | x |
2 | + | 75 100 | x | = | 5 2 | + | 25 100 | x |
75 100 | x | − | 25 100 | x | = | 5 2 | − | 2 |
1 2 | x | = | 5 2 | − | 2 |
1 2 | x | = | 1 2 |
x | = | 1 2 | ÷ | 1 2 |
= | 1 2 | × | 2 |
= | 1 | × | 1 |
x | = | 1 |