| 118380 | + | 118380 | X | + | ( | ( | 118380 | + | 118380 | X | ) | × | 9 100 | ) | = | 148600 |
| Left side of the equation = | 118380 | + | 118380 | X | + | ( | 118380 | + | 118380 | X | ) | × | 9 100 |
| = | 118380 | + | 118380 | X | + | 118380 | × | 9 100 | + | 118380 | X | × | 9 100 |
| = | 118380 | + | 118380 | X | + | 53271 5 | + | 53271 5 | X |
| = | 645171 5 | + | 645171 5 | X |
645171 5 | + | 645171 5 | X | = | 148600 |
645171 5 | X | = | 148600 | − | 645171 5 |
645171 5 | X | = | 97829 5 |
| X | = | 97829 5 | ÷ | 645171 5 |
| = | 97829 5 | × | 5 645171 |
| = | 97829 | × | 1 645171 |
| X | = | 97829 645171 |
| X | = | 0.151633 |