| ( | x | − | 150 | ) | ( | 8 | + | 4 | ( | 230 | − | x | ) | ÷ | 10 | ) | = | 1000 |
| Left side of the equation = | x | ( | 8 | + | 4 | ( | 230 | − | x | ) | ÷ | 10 | ) | − | 150 | ( | 8 | + | 4 | ( | 230 | − | x | ) | ÷ | 10 | ) |
| = | x | × | 8 | + | x | × | 4 | ( | 230 | − | x | ) | ÷ | 10 | − | 150 | ( | 8 | + | 4 | ( | 230 | − | x | ) | ÷ | 10 | ) |
| = | x | × | 8 | + | x | × | 2 5 | ( | 230 | − | x | ) | − | 150 | ( | 8 | + | 4 | ( | 230 | − | x | ) | ÷ | 10 | ) |
| = | 8 | x | + | x | × | 2 5 | × | 230 | − | x | × | 2 5 | x | − | 150 | ( | 8 | + | 4 | ( | 230 | − | x | ) | ÷ | 10 | ) |
| = | 8 | x | + | x | × | 92 | − | x | × | 2 5 | x | − | 150 | ( | 8 | + | 4 | ( | 230 | − | x | ) | ÷ | 10 | ) |
| = | 100 | x | − | x | × | 2 5 | x | − | 150 | ( | 8 | + | 4 | ( | 230 | − | x | ) | ÷ | 10 | ) |
| = | 100 | x | − | x | × | 2 5 | x | − | 150 | × | 8 | − | 150 | × | 4 | ( | 230 | − | x | ) | ÷ | 10 |
| = | 100 | x | − | x | × | 2 5 | x | − | 1200 | − | 60 | ( | 230 | − | x | ) |
| = | 100 | x | − | x | × | 2 5 | x | − | 1200 | − | 60 | × | 230 | + | 60 | x |
| = | 100 | x | − | x | × | 2 5 | x | − | 1200 | − | 13800 | + | 60 | x |
| = | 160 | x | − | x | × | 2 5 | x | − | 15000 |
| 160 | x | − | x | × | 2 5 | x | − | 15000 | = | 1000 |