| 100000 | + | 3 5 | x | × | 10 | = | 190000 | + | 3 10 | x | × | 10 |
| Left side of the equation = | 100000 | + | 6 | x |
| 100000 | + | 6 | x | = | 190000 | + | 3 10 | x | × | 10 |
| Right side of the equation = | 190000 | + | 3 | x |
| 100000 | + | 6 | x | = | 190000 | + | 3 | x |
| 6 | x | − | 3 | x | = | 190000 | − | 100000 |
| 3 | x | = | 190000 | − | 100000 |
| 3 | x | = | 90000 |
| x | = | 90000 | ÷ | 3 |
| = | 90000 | × | 1 3 |
| = | 30000 | × | 1 |
| x | = | 30000 |