| ( | 156 25 | ( | 1 | + | 20 100 | ) | ) | + | ( | 3 100 | x | ) | = | x |
| Left side of the equation = | 156 25 | ( | 1 | + | 20 100 | ) | + | ( | 3 100 | x | ) |
| = | 156 25 | × | 1 | + | 156 25 | × | 20 100 | + | ( | 3 100 | x | ) |
| = | 156 25 | + | 156 125 | + | ( | 3 100 | x | ) |
| = | 936 125 | + | ( | 3 100 | x | ) |
| = | 936 125 | + | 3 100 | x |
936 125 | + | 3 100 | x | = | x |
3 100 | x | − | x | = | - | 936 125 |
| - | 97 100 | x | = | - | 936 125 |
936 125 | = | 97 100 | x |
97 100 | x | = | 936 125 |
| x | = | 936 125 | ÷ | 97 100 |
| = | 936 125 | × | 100 97 |
| = | 936 5 | × | 4 97 |
| x | = | 3744 485 |
| x | = | 7.719588 |