( | m | − | 80 | m | ÷ | ( | m | + | 120 | ) | ) | ÷ | ( | m | + | 120 | ) | = | 24 100 |
方程两边同时乘以: | ( | m | + | 120 | ) |
( | m | − | 80 | m | ÷ | ( | m | + | 120 | ) | ) | = | 24 100 | ( | m | + | 120 | ) |
m | − | 80 | m | ÷ | ( | m | + | 120 | ) | = | 24 100 | ( | m | + | 120 | ) |
m | − | 80 | m | ÷ | ( | m | + | 120 | ) | = | 24 100 | m | + | 24 100 | × | 120 |
m | − | 80 | m | ÷ | ( | m | + | 120 | ) | = | 24 100 | m | + | 144 5 |
方程两边同时乘以: | ( | m | + | 120 | ) |
m | ( | m | + | 120 | ) | − | 80 | m | = | 24 100 | m | ( | m | + | 120 | ) | + | 144 5 | ( | m | + | 120 | ) |
m | m | + | m | × | 120 | − | 80 | m | = | 24 100 | m | ( | m | + | 120 | ) | + | 144 5 | ( | m | + | 120 | ) |
m | m | + | m | × | 120 | − | 80 | m | = | 24 100 | m | m | + | 24 100 | m | × | 120 | + | 144 5 | ( | m | + | 120 | ) |
m | m | + | m | × | 120 | − | 80 | m | = | 24 100 | m | m | + | 144 5 | m | + | 144 5 | ( | m | + | 120 | ) |
m | m | + | 40 | m | = | 24 100 | m | m | + | 144 5 | m | + | 144 5 | ( | m | + | 120 | ) |
m | m | + | 40 | m | = | 24 100 | m | m | + | 144 5 | m | + | 144 5 | m | + | 144 5 | × | 120 |
m | m | + | 40 | m | = | 24 100 | m | m | + | 144 5 | m | + | 144 5 | m | + | 3456 |
m | m | + | 40 | m | = | 24 100 | m | m | + | 288 5 | m | + | 3456 |