| ( | ( | x | − | 500 | ) | × | 3 4 | − | 55 | ) | ÷ | 100 | = | ( | ( | x | − | 200 | ) | × | 3 4 | − | 55 | ) | ÷ | 200 |
| Left side of the equation = | ( | x | − | 500 | ) | × | 3 4 | × | 1 100 | − | 55 | × | 1 100 |
| = | ( | x | − | 500 | ) | × | 3 400 | − | 11 20 |
| = | x | × | 3 400 | − | 500 | × | 3 400 | − | 11 20 |
| = | x | × | 3 400 | − | 15 4 | − | 11 20 |
| = | 3 400 | x | − | 43 10 |
3 400 | x | − | 43 10 | = | ( | ( | x | − | 200 | ) | × | 3 4 | − | 55 | ) | ÷ | 200 |
| Right side of the equation = | ( | x | − | 200 | ) | × | 3 4 | × | 1 200 | − | 55 | × | 1 200 |
| = | ( | x | − | 200 | ) | × | 3 800 | − | 11 40 |
| = | x | × | 3 800 | − | 200 | × | 3 800 | − | 11 40 |
| = | x | × | 3 800 | − | 3 4 | − | 11 40 |
| = | 3 800 | x | − | 41 40 |
3 400 | x | − | 43 10 | = | 3 800 | x | − | 41 40 |
3 400 | x | − | 3 800 | x | = | - | 41 40 | + | 43 10 |
3 800 | x | = | - | 41 40 | + | 43 10 |
3 800 | x | = | 131 40 |
| x | = | 131 40 | ÷ | 3 800 |
| = | 131 40 | × | 800 3 |
| = | 131 | × | 20 3 |
| x | = | 2620 3 |
| x | = | 873.333333 |