| x | + | x | + | x | + | x | + | 180481 | = | 1028 |
| Left side of the equation = | 4 | x | + | 180481 |
| 4 | x | + | 180481 | = | 1028 |
| 4 | x | = | 1028 | − | 180481 |
| 4 | x | = | - | 179453 |
| x | = | - | 179453 | ÷ | 4 |
| = | - | 179453 | × | 1 4 |
| x | = | - | 179453 4 |
| x | = | - 44863.25 |
| 7891 | x | = | 18 |
| x | = | 18 | ÷ | 7891 |
| = | 18 | × | 1 7891 |
| x | = | 18 7891 |
| x | = | 0.002281 |