30123 100 | = | 1 | ÷ | 2 | × | ( | ( | 37741 100 | − | 767 5 | ) | x | ÷ | 2 | + | 767 5 | × | 2 | ) | x |
| 方程右边 = | 1 2 | ( | ( | 37741 100 | − | 767 5 | ) | x | ÷ | 2 | + | 767 5 | × | 2 | ) | x |
30123 100 | = | 1 2 | ( | ( | 37741 100 | − | 767 5 | ) | x | ÷ | 2 | + | 767 5 | × | 2 | ) | x |
| 方程右边 = | 1 2 | ( | 37741 100 | − | 767 5 | ) | x | ÷ | 2 | × | x | + | 1 2 | × | 767 5 | × | 2 | x |
| = | 1 4 | ( | 37741 100 | − | 767 5 | ) | x | x | + | 767 5 | x |
| = | 1 4 | × | 37741 100 | x | x | − | 1 4 | × | 767 5 | x | x | + | 767 5 | x |
| = | 37741 400 | x | x | − | 767 20 | x | x | + | 767 5 | x |
30123 100 | = | 37741 400 | x | x | − | 767 20 | x | x | + | 767 5 | x |