99 100 | × | 1 | = | X | ( | 99 | + | 1 | ) |
| Left side of the equation = | 99 100 |
99 100 | = | X | ( | 99 | + | 1 | ) |
| Right side of the equation = | X | × | 99 | + | X | × | 1 |
| = | 100 | X |
99 100 | = | 100 | X |
| - | 100 | X | = | - | 99 100 |
99 100 | = | 100 | X |
| 100 | X | = | 99 100 |
| X | = | 99 100 | ÷ | 100 |
| = | 99 100 | × | 1 100 |
| X | = | 99 10000 |
| X | = | 0.0099 |