( | x | + | 20 | ) | ( | 42 25 | ÷ | 342 | + | ( | 20 | − | x | ) | ÷ | 18 | ) | = | ( | 20 | − | x | ) | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) |
方程左边 = | x | ( | 42 25 | ÷ | 342 | + | ( | 20 | − | x | ) | ÷ | 18 | ) | + | 20 | ( | 42 25 | ÷ | 342 | + | ( | 20 | − | x | ) | ÷ | 18 | ) |
= | x | × | 42 25 | ÷ | 342 | + | x | ( | 20 | − | x | ) | ÷ | 18 | + | 20 | ( | 42 25 | ÷ | 342 | + | ( | 20 | − | x | ) | ÷ | 18 | ) |
= | x | × | 7 1425 | + | x | ( | 20 | − | x | ) | × | 1 18 | + | 20 | ( | 42 25 | ÷ | 342 | + | ( | 20 | − | x | ) | ÷ | 18 | ) |
= | 7 1425 | x | + | x | × | 20 | × | 1 18 | − | x | x | × | 1 18 | + | 20 | ( | 42 25 | ÷ | 342 | + | ( | 20 | − | x | ) | ÷ | 18 | ) |
= | 7 1425 | x | + | x | × | 10 9 | − | x | x | × | 1 18 | + | 20 | ( | 42 25 | ÷ | 342 | + | ( | 20 | − | x | ) | ÷ | 18 | ) |
= | 4771 4275 | x | − | x | x | × | 1 18 | + | 20 | ( | 42 25 | ÷ | 342 | + | ( | 20 | − | x | ) | ÷ | 18 | ) |
= | 4771 4275 | x | − | x | x | × | 1 18 | + | 20 | × | 42 25 | ÷ | 342 | + | 20 | ( | 20 | − | x | ) | ÷ | 18 |
= | 4771 4275 | x | − | x | x | × | 1 18 | + | 28 285 | + | 10 9 | ( | 20 | − | x | ) |
= | 4771 4275 | x | − | x | x | × | 1 18 | + | 28 285 | + | 10 9 | × | 20 | − | 10 9 | x |
= | 4771 4275 | x | − | x | x | × | 1 18 | + | 28 285 | + | 200 9 | − | 10 9 | x |
= | 7 1425 | x | − | x | x | × | 1 18 | + | 19084 855 |
7 1425 | x | − | x | x | × | 1 18 | + | 19084 855 | = | ( | 20 | − | x | ) | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) |
方程右边 = | 20 | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) | − | x | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) |
= | 20 | × | 49 20 | ÷ | 690 | + | 20 | ( | 20 | + | x | ) | ÷ | 18 | − | x | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) |
= | 49 690 | + | 10 9 | ( | 20 | + | x | ) | − | x | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) |
= | 49 690 | + | 10 9 | × | 20 | + | 10 9 | x | − | x | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) |
= | 49 690 | + | 200 9 | + | 10 9 | x | − | x | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) |
= | 46147 2070 | + | 10 9 | x | − | x | ( | 49 20 | ÷ | 690 | + | ( | 20 | + | x | ) | ÷ | 18 | ) |
= | 46147 2070 | + | 10 9 | x | − | x | × | 49 20 | ÷ | 690 | − | x | ( | 20 | + | x | ) | ÷ | 18 |
= | 46147 2070 | + | 10 9 | x | − | x | × | 49 13800 | − | x | ( | 20 | + | x | ) | × | 1 18 |
= | 46147 2070 | + | 45853 41400 | x | − | x | ( | 20 | + | x | ) | × | 1 18 |
= | 46147 2070 | + | 45853 41400 | x | − | x | × | 20 | × | 1 18 | − | x | x | × | 1 18 |
= | 46147 2070 | + | 45853 41400 | x | − | x | × | 10 9 | − | x | x | × | 1 18 |
= | 46147 2070 | − | 49 13800 | x | − | x | x | × | 1 18 |
7 1425 | x | − | x | x | × | 1 18 | + | 19084 855 | = | 46147 2070 | − | 49 13800 | x | − | x | x | × | 1 18 |
7 1425 | x | − | x | x | × | 1 18 | + | 19084 855 | = | 46147 2070 | − | 49 13800 | x | − | x | x | × | 1 18 |