| 342 | + | x | = | 13 50 | ( | 1680 | + | x | ) |
| Right side of the equation = | 13 50 | × | 1680 | + | 13 50 | x |
| = | 2184 5 | + | 13 50 | x |
| 342 | + | x | = | 2184 5 | + | 13 50 | x |
| x | − | 13 50 | x | = | 2184 5 | − | 342 |
37 50 | x | = | 2184 5 | − | 342 |
37 50 | x | = | 474 5 |
| x | = | 474 5 | ÷ | 37 50 |
| = | 474 5 | × | 50 37 |
| = | 474 | × | 10 37 |
| x | = | 4740 37 |
| x | = | 128.108108 |