48000 | ÷ | ( | 60 | x | ) | = | 24000 | ÷ | ( | 40 | ( | 210 | − | x | ) | ) |
方程两边同时乘以: | ( | 60 | x | ) | , | ( | 40 | ( | 210 | − | x | ) | ) |
48000 | ( | 40 | ( | 210 | − | x | ) | ) | = | 24000 | ( | 60 | x | ) |
48000 | × | 40 | ( | 210 | − | x | ) | = | 24000 | ( | 60 | x | ) |
48000 | × | 40 | ( | 210 | − | x | ) | = | 24000 | × | 60 | x |
1920000 | ( | 210 | − | x | ) | = | 1440000 | x |
1920000 | × | 210 | − | 1920000 | x | = | 1440000 | x |
403200000 | − | 1920000 | x | = | 1440000 | x |
- | 1920000 | x | − | 1440000 | x | = | - | 403200000 |
- | 3360000 | x | = | - | 403200000 |
403200000 | = | 3360000 | x |
3360000 | x | = | 403200000 |
x | = | 403200000 | ÷ | 3360000 |
= | 403200000 | × | 1 3360000 |
= | 120 | × | 1 |
x | = | 120 |