2 | ( | 5 | + | x | + | 36 | ) | = | 442 5 | + | 202 | − | 62 | − | x |
方程左边 = | 2 | × | 5 | + | 2 | x | + | 2 | × | 36 |
= | 10 | + | 2 | x | + | 72 |
= | 82 | + | 2 | x |
82 | + | 2 | x | = | 442 5 | + | 202 | − | 62 | − | x |
方程右边 = | 1142 5 | − | x |
82 | + | 2 | x | = | 1142 5 | − | x |
2 | x | + | x | = | 1142 5 | − | 82 |
3 | x | = | 1142 5 | − | 82 |
3 | x | = | 732 5 |
x | = | 732 5 | ÷ | 3 |
= | 732 5 | × | 1 3 |
= | 244 5 | × | 1 |
x | = | 244 5 |
x | = | 48.8 |