2 | ( | 5 | + | 36 | + | x | ) | = | 442 5 | + | 200 | − | 2 | x |
方程左边 = | 2 | × | 5 | + | 2 | × | 36 | + | 2 | x |
= | 10 | + | 72 | + | 2 | x |
= | 82 | + | 2 | x |
82 | + | 2 | x | = | 442 5 | + | 200 | − | 2 | x |
方程右边 = | 1442 5 | − | 2 | x |
82 | + | 2 | x | = | 1442 5 | − | 2 | x |
2 | x | + | 2 | x | = | 1442 5 | − | 82 |
4 | x | = | 1442 5 | − | 82 |
4 | x | = | 1032 5 |
x | = | 1032 5 | ÷ | 4 |
= | 1032 5 | × | 1 4 |
= | 258 5 | × | 1 |
x | = | 258 5 |
x | = | 51.6 |