| x | + | ( | 3 100 | x | + | 9 10 | ) | ÷ | 97 100 | = | 370 |
| Left side of the equation = | x | + | 3 100 | x | × | 100 97 | + | 9 10 | × | 100 97 |
| = | x | + | 3 97 | x | + | 90 97 |
| = | 100 97 | x | + | 90 97 |
100 97 | x | + | 90 97 | = | 370 |
100 97 | x | = | 370 | − | 90 97 |
100 97 | x | = | 35800 97 |
| x | = | 35800 97 | ÷ | 100 97 |
| = | 35800 97 | × | 97 100 |
| = | 358 | × | 1 |
| x | = | 358 |