| 25 | ( | 40 | x | + | 19 | ) | − | 14318 | = | 11 | x | + | 3 |
| Left side of the equation = | 25 | × | 40 | x | + | 25 | × | 19 | − | 14318 |
| = | 1000 | x | + | 475 | − | 14318 |
| = | 1000 | x | − | 13843 |
| 1000 | x | − | 13843 | = | 11 | x | + | 3 |
| 1000 | x | − | 11 | x | = | 3 | + | 13843 |
| 989 | x | = | 3 | + | 13843 |
| 989 | x | = | 13846 |
| x | = | 13846 | ÷ | 989 |
| = | 13846 | × | 1 989 |
| = | 14 | × | 1 |
| x | = | 14 |