| 120000 | + | 210 | x | + | 10000 | + | 8000 | = | 9600 | x |
| Left side of the equation = | 138000 | + | 210 | x |
| 138000 | + | 210 | x | = | 9600 | x |
| 210 | x | − | 9600 | x | = | - | 138000 |
| - | 9390 | x | = | - | 138000 |
| 138000 | = | 9390 | x |
| 9390 | x | = | 138000 |
| x | = | 138000 | ÷ | 9390 |
| = | 138000 | × | 1 9390 |
| = | 4600 | × | 1 313 |
| x | = | 4600 313 |
| x | = | 14.696486 |