250 | = | 4 | ( | 10000 | ÷ | x | ) | + | ( | 7600 | ÷ | ( | x | + | 112 5 | ) | ) |
250 | = | 4 | × | 10000 | ÷ | x | + | ( | 7600 | ÷ | ( | x | + | 112 5 | ) | ) |
250 | = | 40000 | ÷ | x | + | ( | 7600 | ÷ | ( | x | + | 112 5 | ) | ) |
方程两边同时乘以: | x |
250 | x | = | 40000 | + | ( | 7600 | ÷ | ( | x | + | 112 5 | ) | ) | x |
250 | x | = | 40000 | + | 7600 | ÷ | ( | x | + | 112 5 | ) | × | x |
方程两边同时乘以: | ( | x | + | 112 5 | ) |
250 | x | ( | x | + | 112 5 | ) | = | 40000 | ( | x | + | 112 5 | ) | + | 7600 | x |
250 | x | x | + | 250 | x | × | 112 5 | = | 40000 | ( | x | + | 112 5 | ) | + | 7600 | x |
250 | x | x | + | 250 | x | × | 112 5 | = | 40000 | x | + | 40000 | × | 112 5 | + | 7600 | x |
250 | x | x | + | 5600 | x | = | 40000 | x | + | 896000 | + | 7600 | x |
250 | x | x | + | 5600 | x | = | 47600 | x | + | 896000 |