| ( | 599 | − | 48 | − | 42 | + | 2 | x | ) | ÷ | 12 | = | 55 |
| Left side of the equation = | 599 | × | 1 12 | − | 48 | × | 1 12 | − | 42 | × | 1 12 | + | 2 | x | × | 1 12 |
| = | 599 12 | − | 4 | − | 7 2 | + | 1 6 | x |
| = | 509 12 | + | 1 6 | x |
509 12 | + | 1 6 | x | = | 55 |
1 6 | x | = | 55 | − | 509 12 |
1 6 | x | = | 151 12 |
| x | = | 151 12 | ÷ | 1 6 |
| = | 151 12 | × | 6 |
| = | 151 2 | × | 1 |
| x | = | 151 2 |
| x | = | 75.5 |