| 4899 | ( | 1 | + | x | ) | = | 429 | × | 12 |
| Left side of the equation = | 4899 | × | 1 | + | 4899 | x |
| = | 4899 | + | 4899 | x |
| 4899 | + | 4899 | x | = | 429 | × | 12 |
| Right side of the equation = | 5148 |
| 4899 | + | 4899 | x | = | 5148 |
| 4899 | x | = | 5148 | − | 4899 |
| 4899 | x | = | 249 |
| x | = | 249 | ÷ | 4899 |
| = | 249 | × | 1 4899 |
| = | 83 | × | 1 1633 |
| x | = | 83 1633 |
| x | = | 0.050827 |