47 10 | + | x | + | ( | 47 10 | + | x | ) | × | 3 20 | = | 196 25 |
| Left side of the equation = | 47 10 | + | x | + | 47 10 | × | 3 20 | + | x | × | 3 20 |
| = | 47 10 | + | x | + | 141 200 | + | x | × | 3 20 |
| = | 1081 200 | + | 23 20 | x |
1081 200 | + | 23 20 | x | = | 196 25 |
23 20 | x | = | 196 25 | − | 1081 200 |
23 20 | x | = | 487 200 |
| x | = | 487 200 | ÷ | 23 20 |
| = | 487 200 | × | 20 23 |
| = | 487 10 | × | 1 23 |
| x | = | 487 230 |
| x | = | 2.117391 |