40 | ( | 3 | x | − | 6 | ) | − | 12 | ( | 10 | x | − | 16 | ) | = | 8 | ( | 15 | x | − | 12 | ) | − | 5 | ( | 12 | x | − | 66 | ) |
方程左边 = | 40 | × | 3 | x | − | 40 | × | 6 | − | 12 | ( | 10 | x | − | 16 | ) |
= | 120 | x | − | 240 | − | 12 | ( | 10 | x | − | 16 | ) |
= | 120 | x | − | 240 | − | 12 | × | 10 | x | + | 12 | × | 16 |
= | 120 | x | − | 240 | − | 120 | x | + | 192 |
= | 0 | x | − | 48 |
- | 48 | = | 8 | ( | 15 | x | − | 12 | ) | − | 5 | ( | 12 | x | − | 66 | ) |
方程右边 = | 8 | × | 15 | x | − | 8 | × | 12 | − | 5 | ( | 12 | x | − | 66 | ) |
= | 120 | x | − | 96 | − | 5 | ( | 12 | x | − | 66 | ) |
= | 120 | x | − | 96 | − | 5 | × | 12 | x | + | 5 | × | 66 |
= | 120 | x | − | 96 | − | 60 | x | + | 330 |
= | 60 | x | + | 234 |
- | 48 | = | 60 | x | + | 234 |
- | 60 | x | = | 234 | + | 48 |
- | 60 | x | = | 282 |
- | 282 | = | 60 | x |
60 | x | = | - | 282 |
x | = | - | 282 | ÷ | 60 |
= | - | 282 | × | 1 60 |
= | - | 47 | × | 1 10 |
x | = | - | 47 10 |
x | = | - 4.7 |
3 | ( | 2 | x | − | 3 | ) | − | ( | 3 | − | 2 | x | ) | ÷ | 3 | = | 5 | ( | 3 | − | 2 | x | ) | + | ( | 2 | x | − | 3 | ) | ÷ | 2 |
方程左边 = | 3 | × | 2 | x | − | 3 | × | 3 | − | ( | 3 | − | 2 | x | ) | × | 1 3 |
= | 6 | x | − | 9 | − | ( | 3 | − | 2 | x | ) | × | 1 3 |
= | 6 | x | − | 9 | − | 3 | × | 1 3 | + | 2 | x | × | 1 3 |
= | 6 | x | − | 9 | − | 1 | + | 2 3 | x |
= | 20 3 | x | − | 10 |
20 3 | x | − | 10 | = | 5 | ( | 3 | − | 2 | x | ) | + | ( | 2 | x | − | 3 | ) | ÷ | 2 |
方程右边 = | 5 | × | 3 | − | 5 | × | 2 | x | + | ( | 2 | x | − | 3 | ) | × | 1 2 |
= | 15 | − | 10 | x | + | ( | 2 | x | − | 3 | ) | × | 1 2 |
= | 15 | − | 10 | x | + | 2 | x | × | 1 2 | − | 3 | × | 1 2 |
= | 15 | − | 10 | x | + | 1 | x | − | 3 2 |
= | 27 2 | − | 9 | x |
20 3 | x | − | 10 | = | 27 2 | − | 9 | x |
20 3 | x | + | 9 | x | = | 27 2 | + | 10 |
47 3 | x | = | 27 2 | + | 10 |
47 3 | x | = | 47 2 |
x | = | 47 2 | ÷ | 47 3 |
= | 47 2 | × | 3 47 |
= | 1 2 | × | 3 |
x | = | 3 2 |
x | = | 1.5 |