129 5 | x | + | 18 | ( | 60 | − | x | ) | = | 60 | × | 253 10 |
| Left side of the equation = | 129 5 | x | + | 18 | × | 60 | − | 18 | x |
| = | 129 5 | x | + | 1080 | − | 18 | x |
| = | 39 5 | x | + | 1080 |
39 5 | x | + | 1080 | = | 60 | × | 253 10 |
| Right side of the equation = | 1518 |
39 5 | x | + | 1080 | = | 1518 |
39 5 | x | = | 1518 | − | 1080 |
39 5 | x | = | 438 |
| x | = | 438 | ÷ | 39 5 |
| = | 438 | × | 5 39 |
| = | 146 | × | 5 13 |
| x | = | 730 13 |
| x | = | 56.153846 |