( | ( | 10 | x | + | 10 | ) | − | ( | 20 | x | + | 30 | ) | ÷ | ( | 3 | x | + | 6 | ) | ) | x | = | 0 |
( | 10 | x | + | 10 | ) | x | − | ( | 20 | x | + | 30 | ) | ÷ | ( | 3 | x | + | 6 | ) | × | x | = | 0 |
方程两边同时乘以: | ( | 3 | x | + | 6 | ) |
( | 10 | x | + | 10 | ) | x | ( | 3 | x | + | 6 | ) | − | ( | 20 | x | + | 30 | ) | x | = | 0 |
10 | x | x | ( | 3 | x | + | 6 | ) | + | 10 | x | ( | 3 | x | + | 6 | ) | − | ( | 20 | x | + | 30 | ) | x | = | 0 |
10 | x | x | × | 3 | x | + | 10 | x | x | × | 6 | + | 10 | x | ( | 3 | x | + | 6 | ) | = | 0 |
30 | x | x | x | + | 60 | x | x | + | 10 | x | ( | 3 | x | + | 6 | ) | − | ( | 20 | x | + | 30 | ) | x | = | 0 |
30 | x | x | x | + | 60 | x | x | + | 10 | x | × | 3 | x | + | 10 | = | 0 |
30 | x | x | x | + | 60 | x | x | + | 30 | x | x | + | 60 | x | = | 0 |
30 | x | x | x | + | 60 | x | x | + | 30 | x | x | + | 60 | x | = | 0 |
30 | x | x | x | + | 60 | x | x | + | 30 | x | x | + | 30 | x | = | 0 |
x1=0 |