| ( | 7 100 | x | ÷ | 21 20 | ) | − | x | + | 340000 | = | 0 |
| Left side of the equation = | 7 100 | x | ÷ | 21 20 | − | x | + | 340000 |
| = | 1 15 | x | − | x | + | 340000 |
| = | - | 14 15 | x | + | 340000 |
| - | 14 15 | x | + | 340000 | = | 0 |
| - | 14 15 | x | = | 0 | − | 340000 |
| - | 14 15 | x | = | - | 340000 |
| 340000 | = | 14 15 | x |
14 15 | x | = | 340000 |
| x | = | 340000 | ÷ | 14 15 |
| = | 340000 | × | 15 14 |
| = | 170000 | × | 15 7 |
| x | = | 2550000 7 |
| x | = | 364285.714286 |