| 135 | × | 450 | + | 1 | x | = | 380 | ( | 135 | + | 1 | x | ) |
| Left side of the equation = | 60750 | + | 1 | x |
| 60750 | + | 1 | x | = | 380 | ( | 135 | + | 1 | x | ) |
| Right side of the equation = | 380 | × | 135 | + | 380 | × | 1 | x |
| = | 51300 | + | 380 | x |
| 60750 | + | 1 | x | = | 51300 | + | 380 | x |
| 1 | x | − | 380 | x | = | 51300 | − | 60750 |
| - | 379 | x | = | 51300 | − | 60750 |
| - | 379 | x | = | - | 9450 |
| 9450 | = | 379 | x |
| 379 | x | = | 9450 |
| x | = | 9450 | ÷ | 379 |
| = | 9450 | × | 1 379 |
| x | = | 9450 379 |
| x | = | 24.934037 |