16 100 | = | 13 100 | + | 18 100 | ( | 1 | − | X | ) |
| Right side of the equation = | 13 100 | + | 18 100 | × | 1 | − | 18 100 | X |
| = | 13 100 | + | 9 50 | − | 18 100 | X |
| = | 31 100 | − | 18 100 | X |
16 100 | = | 31 100 | − | 18 100 | X |
18 100 | X | = | 31 100 | − | 16 100 |
18 100 | X | = | 3 20 |
| X | = | 3 20 | ÷ | 18 100 |
| = | 3 20 | × | 100 18 |
| = | 1 | × | 5 6 |
| X | = | 5 6 |
| X | = | 0.833333 |