4000 | ÷ | x | = | 4000 | ÷ | ( | x | + | 1 | ) | + | 200 |
方程两边同时乘以: | x | , | ( | x | + | 1 | ) |
4000 | ( | x | + | 1 | ) | = | 4000 | x | + | 200 | x | ( | x | + | 1 | ) |
4000 | x | + | 4000 | × | 1 | = | 4000 | x | + | 200 | x | ( | x | + | 1 | ) |
4000 | x | + | 4000 | × | 1 | = | 4000 | x | + | 200 | x | x | + | 200 | x | × | 1 |
4000 | x | + | 4000 | = | 4000 | x | + | 200 | x | x | + | 200 | x |
4000 | x | + | 4000 | = | 4200 | x | + | 200 | x | x |