| 111140 | + | 111140 | X | + | ( | ( | 111140 | + | 111140 | X | ) | × | 9 100 | ) | = | 135000 |
| 方程左边 = | 111140 | + | 111140 | X | + | ( | 111140 | + | 111140 | X | ) | × | 9 100 |
| = | 111140 | + | 111140 | X | + | 111140 | × | 9 100 | + | 111140 | X | × | 9 100 |
| = | 111140 | + | 111140 | X | + | 50013 5 | + | 50013 5 | X |
| = | 605713 5 | + | 605713 5 | X |
605713 5 | + | 605713 5 | X | = | 135000 |
605713 5 | X | = | 135000 | − | 605713 5 |
605713 5 | X | = | 69287 5 |
| X | = | 69287 5 | ÷ | 605713 5 |
| = | 69287 5 | × | 5 605713 |
| = | 69287 | × | 1 605713 |
| X | = | 69287 605713 |
| X | = | 0.114389 |