( | 20 | − | x | ) | x | × | 4 5 | x | × | 18082 | ÷ | 1000 | + | 18082 | = | 18130 |
方程左边 = | ( | 20 | − | x | ) | x | × | 9041 625 | x | + | 18082 |
( | 20 | − | x | ) | x | × | 9041 625 | x | + | 18082 | = | 18130 |
方程左边 = | 20 | x | × | 9041 625 | x | − | x | x | × | 9041 625 | x | + | 18082 |
= | 36164 125 | x | x | − | x | x | × | 9041 625 | x | + | 18082 |
36164 125 | x | x | − | x | x | × | 9041 625 | x | + | 18082 | = | 18130 |