| ( | 4370 | − | x | ) | + | 11 20 | x | = | 3059 |
| Left side of the equation = | 4370 | − | x | + | 11 20 | x |
| = | 4370 | − | 9 20 | x |
| 4370 | − | 9 20 | x | = | 3059 |
| - | 9 20 | x | = | 3059 | − | 4370 |
| - | 9 20 | x | = | - | 1311 |
| 1311 | = | 9 20 | x |
9 20 | x | = | 1311 |
| x | = | 1311 | ÷ | 9 20 |
| = | 1311 | × | 20 9 |
| = | 437 | × | 20 3 |
| x | = | 8740 3 |
| x | = | 2913.333333 |