| X | + | X | ÷ | 113 | ÷ | 10 | = | 123 | ÷ | 113 | × | X |
| Left side of the equation = | X | + | X | × | 1 1130 |
| = | 1131 1130 | X |
1131 1130 | X | = | 123 | ÷ | 113 | × | X |
| Right side of the equation = | 123 113 | X |
1131 1130 | X | = | 123 113 | X |
1131 1130 | X | − | 123 113 | X | = | 0 |
| - | 11187 127690 | X | = | 0 |
| - | 0 | = | 11187 127690 | X |
11187 127690 | X | = | - | 0 |
| X | = | - | 0 | ÷ | 11187 127690 |
| = | - | 0 | × | 127690 11187 |
| X | = | 0 |