| 13 | x | = | ( | 16 5 | + | x | ) | × | 199 25 |
| Right side of the equation = | 16 5 | × | 199 25 | + | x | × | 199 25 |
| = | 3184 125 | + | x | × | 199 25 |
| 13 | x | = | 3184 125 | + | 199 25 | x |
| 13 | x | − | 199 25 | x | = | 3184 125 |
126 25 | x | = | 3184 125 |
| x | = | 3184 125 | ÷ | 126 25 |
| = | 3184 125 | × | 25 126 |
| = | 1592 5 | × | 1 63 |
| x | = | 1592 315 |
| x | = | 5.053968 |