| 5 | x | + | 37 10 | × | 57 | = | 4 | ( | 57 | + | x | ) |
| Left side of the equation = | 5 | x | + | 2109 10 |
| 5 | x | + | 2109 10 | = | 4 | ( | 57 | + | x | ) |
| Right side of the equation = | 4 | × | 57 | + | 4 | x |
| = | 228 | + | 4 | x |
| 5 | x | + | 2109 10 | = | 228 | + | 4 | x |
| 5 | x | − | 4 | x | = | 228 | − | 2109 10 |
| x | = | 228 | − | 2109 10 |
| x | = | 228 | − | 2109 10 |
| x | = | 171 10 |