2 | x | + | 12 | + | 16 | + | 8 | ( | 20 | − | x | − | 10 | ) | = | 64 |
方程左边 = | 2 | x | + | 28 | + | 8 | ( | 20 | − | x | − | 10 | ) |
2 | x | + | 28 | + | 8 | ( | 20 | − | x | − | 10 | ) | = | 64 |
方程左边 = | 2 | x | + | 28 | + | 8 | × | 20 | − | 8 | x | − | 8 | × | 10 |
= | 2 | x | + | 28 | + | 160 | − | 8 | x | − | 80 |
= | - | 6 | x | + | 108 |
- | 6 | x | + | 108 | = | 64 |
- | 6 | x | = | 64 | − | 108 |
- | 6 | x | = | - | 44 |
44 | = | 6 | x |
6 | x | = | 44 |
x | = | 44 | ÷ | 6 |
= | 44 | × | 1 6 |
= | 22 | × | 1 3 |
x | = | 22 3 |
x | = | 7.333333 |