| ( | x | − | 3000 | × | 11 125 | ) | ÷ | 1200 | = | ( | x | − | 3000 | × | 11 125 | − | 1000 | × | 1 10 | ) | ÷ | 1000 |
| Left side of the equation = | x | × | 1 1200 | − | 3000 | × | 11 125 | × | 1 1200 |
| = | x | × | 1 1200 | − | 11 50 |
1 1200 | x | − | 11 50 | = | ( | x | − | 3000 | × | 11 125 | − | 1000 | × | 1 10 | ) | ÷ | 1000 |
| Right side of the equation = | x | × | 1 1000 | − | 3000 | × | 11 125 | × | 1 1000 | − | 1000 | × | 1 10 | × | 1 1000 |
| = | x | × | 1 1000 | − | 33 125 | − | 1 10 |
| = | 1 1000 | x | − | 91 250 |
1 1200 | x | − | 11 50 | = | 1 1000 | x | − | 91 250 |
1 1200 | x | − | 1 1000 | x | = | - | 91 250 | + | 11 50 |
| - | 1 6000 | x | = | - | 91 250 | + | 11 50 |
| - | 1 6000 | x | = | - | 18 125 |
18 125 | = | 1 6000 | x |
1 6000 | x | = | 18 125 |
| x | = | 18 125 | ÷ | 1 6000 |
| = | 18 125 | × | 6000 |
| = | 18 | × | 48 |
| x | = | 864 |