( | 6 | + | x | ) | ( | 8 | + | x | ) | − | 6 | × | 8 | = | 51 |
方程左边 = | ( | 6 | + | x | ) | ( | 8 | + | x | ) | − | 48 |
( | 6 | + | x | ) | ( | 8 | + | x | ) | − | 48 | = | 51 |
方程左边 = | 6 | ( | 8 | + | x | ) | + | x | ( | 8 | + | x | ) | − | 48 |
= | 6 | × | 8 | + | 6 | x | + | x | ( | 8 | + | x | ) | − | 48 |
= | 48 | + | 6 | x | + | x | ( | 8 | + | x | ) | − | 48 |
= | 0 | + | 6 | x | + | x | ( | 8 | + | x | ) |
= | 6 | x | + | x | × | 8 | + | x | x |
= | 14 | x | + | x | x |
14 | x | + | x | x | = | 51 |