3 | x | ÷ | ( | 3 | + | x | ) | = | 3 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 |
方程两边同时乘以: | ( | 3 | + | x | ) |
3 | x | = | 3 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 |
3 | x | = | 3 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 | × | 1 10 |