| 2 | ( | 5 | + | x | ) | = | 50 | + | 200 | − | 2 | x |
| Left side of the equation = | 2 | × | 5 | + | 2 | x |
| = | 10 | + | 2 | x |
| 10 | + | 2 | x | = | 50 | + | 200 | − | 2 | x |
| Right side of the equation = | 250 | − | 2 | x |
| 10 | + | 2 | x | = | 250 | − | 2 | x |
| 2 | x | + | 2 | x | = | 250 | − | 10 |
| 4 | x | = | 250 | − | 10 |
| 4 | x | = | 240 |
| x | = | 240 | ÷ | 4 |
| = | 240 | × | 1 4 |
| = | 60 | × | 1 |
| x | = | 60 |