100 | ÷ | x | = | ( | 1 | + | 100 | x | ) | ( | 1 | + | 1 400 | x | ) |
方程两边同时乘以: | x |
100 | = | ( | 1 | + | 100 | x | ) | ( | 1 | + | 1 400 | x | ) | x |
100 | = | 1 | ( | 1 | + | 1 400 | x | ) | x | + | 100 | x | ( | 1 | + | 1 400 | x | ) | x |
100 | = | 1 | × | 1 | x | + | 1 | × | 1 400 | x | x | + | 100 | x | ( | 1 | + | 1 400 | x | ) | x |
100 | = | 1 | x | + | 1 400 | x | x | + | 100 | x | ( | 1 | + | 1 400 | x | ) | x |
100 | = | 1 | x | + | 1 400 | x | x | + | 100 | x | × | 1 | x | + | 100 | x | × | 1 400 |
100 | = | 1 | x | + | 1 400 | x | x | + | 100 | x | x | + | 1 4 | x | x | x |