6 | x | × | 6 | + | ( | 6 | x | + | 16 | ) | × | 6 | = | 7 | x | × | 12 |
方程左边 = | 36 | x | + | ( | 6 | x | + | 16 | ) | × | 6 |
36 | x | + | ( | 6 | x | + | 16 | ) | × | 6 | = | 7 | x | × | 12 |
方程左边 = | 36 | x | + | 6 | x | × | 6 | + | 16 | × | 6 |
= | 36 | x | + | 36 | x | + | 96 |
= | 72 | x | + | 96 |
72 | x | + | 96 | = | 7 | x | × | 12 |
方程右边 = | 84 | x |
72 | x | + | 96 | = | 84 | x |
72 | x | − | 84 | x | = | - | 96 |
- | 12 | x | = | - | 96 |
96 | = | 12 | x |
12 | x | = | 96 |
x | = | 96 | ÷ | 12 |
= | 96 | × | 1 12 |
= | 8 | × | 1 |
x | = | 8 |