| 14 | × | 8 500 | + | 7 1000 | X | + | 7 2000 | × | 110 | = | 7 2000 | X | + | 40 100 | × | 1 100 | × | 110 |
| Left side of the equation = | 28 125 | + | 7 1000 | X | + | 77 200 |
| = | 609 1000 | + | 7 1000 | X |
609 1000 | + | 7 1000 | X | = | 7 2000 | X | + | 40 100 | × | 1 100 | × | 110 |
| Right side of the equation = | 7 2000 | X | + | 11 25 |
609 1000 | + | 7 1000 | X | = | 7 2000 | X | + | 11 25 |
7 1000 | X | − | 7 2000 | X | = | 11 25 | − | 609 1000 |
7 2000 | X | = | 11 25 | − | 609 1000 |
7 2000 | X | = | - | 169 1000 |
| X | = | - | 169 1000 | ÷ | 7 2000 |
| = | - | 169 1000 | × | 2000 7 |
| = | - | 169 | × | 2 7 |
| X | = | - | 338 7 |
| X | = | - 48.285714 |