| 8 | ( | x | + | x | + | 35 | ) | = | 5 | ( | x | + | 35 | ) | + | 5 | ( | x | + | x | + | 35 | ) |
| Left side of the equation = | 8 | x | + | 8 | x | + | 8 | × | 35 |
| = | 8 | x | + | 8 | x | + | 280 |
| = | 16 | x | + | 280 |
| 16 | x | + | 280 | = | 5 | ( | x | + | 35 | ) | + | 5 | ( | x | + | x | + | 35 | ) |
| Right side of the equation = | 5 | x | + | 5 | × | 35 | + | 5 | ( | x | + | x | + | 35 | ) |
| = | 5 | x | + | 175 | + | 5 | ( | x | + | x | + | 35 | ) |
| = | 5 | x | + | 175 | + | 5 | x | + | 5 | x | + | 5 | × | 35 |
| = | 5 | x | + | 175 | + | 5 | x | + | 5 | x | + | 175 |
| = | 15 | x | + | 350 |
| 16 | x | + | 280 | = | 15 | x | + | 350 |
| 16 | x | − | 15 | x | = | 350 | − | 280 |
| x | = | 350 | − | 280 |
| x | = | 350 | − | 280 |
| x | = | 70 |