| 0 | = | 70 100 | − | 37 100 | − | ( | 1 | + | 10 100 | ) | ÷ | 10 100 | × | 10 100 | ( | 1 | − | X | ) |
| Right side of the equation = | 70 100 | − | 37 100 | − | ( | 1 | + | 10 100 | ) | × | 1 | ( | 1 | − | X | ) |
| = | 33 100 | − | ( | 1 | + | 10 100 | ) | × | 1 | ( | 1 | − | X | ) |
| 0 | = | 33 100 | − | ( | 1 | + | 10 100 | ) | × | 1 | ( | 1 | − | X | ) |
| Right side of the equation = | 33 100 | − | 1 | × | 1 | ( | 1 | − | X | ) | − | 10 100 | × | 1 | ( | 1 | − | X | ) |
| = | 33 100 | − | 1 | ( | 1 | − | X | ) | − | 1 10 | ( | 1 | − | X | ) |
| = | 33 100 | − | 1 | × | 1 | + | 1 | X | − | 1 10 | ( | 1 | − | X | ) |
| = | 33 100 | − | 1 | + | 1 | X | − | 1 10 | ( | 1 | − | X | ) |
| = | - | 67 100 | + | 1 | X | − | 1 10 | ( | 1 | − | X | ) |
| = | - | 67 100 | + | 1 | X | − | 1 10 | × | 1 | + | 1 10 | X |
| = | - | 67 100 | + | 1 | X | − | 1 10 | + | 1 10 | X |
| = | - | 77 100 | + | 11 10 | X |
| 0 | = | - | 77 100 | + | 11 10 | X |
| - | 11 10 | X | = | - | 77 100 | − | 0 |
| - | 11 10 | X | = | - | 77 100 |
77 100 | = | 11 10 | X |
11 10 | X | = | 77 100 |
| X | = | 77 100 | ÷ | 11 10 |
| = | 77 100 | × | 10 11 |
| = | 7 10 | × | 1 |
| X | = | 7 10 |
| X | = | 0.7 |