| 120000 | + | 210 | x | + | 10000 | + | 1000 | x | + | 1000 | x | = | 3000 | x |
| Left side of the equation = | 130000 | + | 2210 | x |
| 130000 | + | 2210 | x | = | 3000 | x |
| 2210 | x | − | 3000 | x | = | - | 130000 |
| - | 790 | x | = | - | 130000 |
| 130000 | = | 790 | x |
| 790 | x | = | 130000 |
| x | = | 130000 | ÷ | 790 |
| = | 130000 | × | 1 790 |
| = | 13000 | × | 1 79 |
| x | = | 13000 79 |
| x | = | 164.556962 |