( | 2300 | ÷ | ( | 2 | x | + | 30 | ) | ) | + | ( | 2300 | ÷ | x | ) | = | 33 |
2300 | ÷ | ( | 2 | x | + | 30 | ) | + | ( | 2300 | ÷ | x | ) | = | 33 |
方程两边同时乘以: | ( | 2 | x | + | 30 | ) |
2300 | + | ( | 2300 | ÷ | x | ) | ( | 2 | x | + | 30 | ) | = | 33 | ( | 2 | x | + | 30 | ) |
2300 | + | 2300 | ÷ | x | × | ( | 2 | x | + | 30 | ) | = | 33 | ( | 2 | x | + | 30 | ) |
2300 | + | 2300 | ÷ | x | × | ( | 2 | x | + | 30 | ) | = | 33 | × | 2 | x | + | 33 | × | 30 |
2300 | + | 2300 | ÷ | x | × | ( | 2 | x | + | 30 | ) | = | 66 | x | + | 990 |
方程两边同时乘以: | x |
2300 | x | + | 2300 | ( | 2 | x | + | 30 | ) | = | 66 | x | x | + | 990 | x |
2300 | x | + | 2300 | × | 2 | x | + | 2300 | × | 30 | = | 66 | x | x | + | 990 | x |
2300 | x | + | 4600 | x | + | 69000 | = | 66 | x | x | + | 990 | x |
6900 | x | + | 69000 | = | 66 | x | x | + | 990 | x |
x1= | - | 115 11 |
x2=100 |