| ( | 5 | x | + | 50 | ) | + | ( | 3 | x | + | 50 | ) | = | 5 | ÷ | 4 |
| Left side of the equation = | 5 | x | + | 50 | + | ( | 3 | x | + | 50 | ) |
| = | 5 | x | + | 50 | + | 3 | x | + | 50 |
| = | 8 | x | + | 100 |
| 8 | x | + | 100 | = | 5 | ÷ | 4 |
| Right side of the equation = | 5 4 |
| 8 | x | + | 100 | = | 5 4 |
| 8 | x | = | 5 4 | − | 100 |
| 8 | x | = | - | 395 4 |
| x | = | - | 395 4 | ÷ | 8 |
| = | - | 395 4 | × | 1 8 |
| x | = | - | 395 32 |
| x | = | - 12.34375 |