| ( | ( | - | 1 | ) | ÷ | ( | 10 | ) | × | x | + | 70 | ) | ( | x | + | 200 | ) | − | 20 | x | = | 10560 |
| ( | - | 1 | ) | ÷ | ( | 10 | ) | × | x | ( | x | + | 200 | ) | + | 70 | ( | x | + | 200 | ) | − | 20 | x | = | 10560 |
| Multiply both sides of the equation by: | ( | 10 | ) |
| ( | - | 1 | ) | x | ( | x | + | 200 | ) | + | 70 | ( | x | + | 200 | ) | ( | 10 | ) | − | 20 | x | ( | 10 | ) | = | 10560 | ( | 10 | ) |
| - | 1 | x | ( | x | + | 200 | ) | + | 70 | ( | x | + | 200 | ) | ( | 10 | ) | − | 20 | x | ( | 10 | ) | = | 10560 | ( | 10 | ) |
| - | 1 | x | ( | x | + | 200 | ) | + | 70 | ( | x | + | 200 | ) | ( | 10 | ) | − | 20 | x | ( | 10 | ) | = | 10560 | × | 10 |
| - | 1 | x | ( | x | + | 200 | ) | + | 70 | ( | x | + | 200 | ) | ( | 10 | ) | − | 20 | x | ( | 10 | ) | = | 105600 |
| - | 1 | x | x | − | 1 | x | × | 200 | + | 70 | ( | x | + | 200 | ) | ( | 10 | ) | − | 20 | x | ( | 10 | ) | = | 105600 |
| - | 1 | x | x | − | 200 | x | + | 70 | ( | x | + | 200 | ) | ( | 10 | ) | − | 20 | x | ( | 10 | ) | = | 105600 |
| - | 1 | x | x | − | 200 | x | + | 70 | x | ( | 10 | ) | + | 70 | × | 200 | ( | 10 | ) | − | 20 | = | 105600 |
| - | 1 | x | x | − | 200 | x | + | 70 | x | ( | 10 | ) | + | 14000 | ( | 10 | ) | − | 20 | x | = | 105600 |
| - | 1 | x | x | − | 200 | x | + | 70 | x | × | 10 | + | 14000 | ( | 10 | ) | − | 20 | x | = | 105600 |
| - | 1 | x | x | − | 200 | x | + | 700 | x | + | 14000 | ( | 10 | ) | − | 20 | x | ( | 10 | ) | = | 105600 |
| - | 1 | x | x | + | 500 | x | + | 14000 | ( | 10 | ) | − | 20 | x | ( | 10 | ) | = | 105600 |
| - | 1 | x | x | + | 500 | x | + | 14000 | × | 10 | − | 20 | x | ( | 10 | ) | = | 105600 |
| - | 1 | x | x | + | 500 | x | + | 140000 | − | 20 | x | ( | 10 | ) | = | 105600 |
| - | 1 | x | x | + | 500 | x | + | 140000 | − | 20 | x | × | 10 | = | 105600 |
| - | 1 | x | x | + | 500 | x | + | 140000 | − | 200 | x | = | 105600 |
| - | 1 | x | x | + | 300 | x | + | 140000 | = | 105600 |