| 13 | x | = | ( | 7 2 | + | x | ) | × | 199 25 |
| Right side of the equation = | 7 2 | × | 199 25 | + | x | × | 199 25 |
| = | 1393 50 | + | x | × | 199 25 |
| 13 | x | = | 1393 50 | + | 199 25 | x |
| 13 | x | − | 199 25 | x | = | 1393 50 |
126 25 | x | = | 1393 50 |
| x | = | 1393 50 | ÷ | 126 25 |
| = | 1393 50 | × | 25 126 |
| = | 199 2 | × | 1 18 |
| x | = | 199 36 |
| x | = | 5.527778 |