| X | − | ( | X | ÷ | 70 | + | X | ÷ | 2000 | + | 69 | X | ÷ | 3500 | + | X | ÷ | 10 | − | X | ÷ | 700 | − | X | ) | = | 16800 |
| Left side of the equation = | X | − | X | ÷ | 70 | − | X | ÷ | 2000 | − | 69 | X | ÷ | 3500 | − | X | ÷ | 10 | + | X | ÷ | 700 |
| = | X | − | X | × | 1 70 | − | X | × | 1 2000 | − | 69 3500 | X | − | X | × | 1 10 | + | X | × | 1 700 | + | X |
| = | 17379 20000 | X | + | 480 |
17379 20000 | X | + | 480 | = | 16800 |
17379 20000 | X | = | 16800 | − | 480 |
17379 20000 | X | = | 16320 |
| X | = | 16320 | ÷ | 17379 20000 |
| = | 16320 | × | 20000 17379 |
| = | 5440 | × | 20000 5793 |
| X | = | 108800000 5793 |
| X | = | 18781.287761 |