| ( | 150 | ( | 1 | + | 20 100 | ) | ) | + | ( | 5 100 | x | ) | = | x |
| Left side of the equation = | 150 | ( | 1 | + | 20 100 | ) | + | ( | 5 100 | x | ) |
| = | 150 | × | 1 | + | 150 | × | 20 100 | + | ( | 5 100 | x | ) |
| = | 150 | + | 30 | + | ( | 5 100 | x | ) |
| = | 180 | + | ( | 5 100 | x | ) |
| = | 180 | + | 5 100 | x |
| 180 | + | 5 100 | x | = | x |
5 100 | x | − | x | = | - | 180 |
| - | 19 20 | x | = | - | 180 |
| 180 | = | 19 20 | x |
19 20 | x | = | 180 |
| x | = | 180 | ÷ | 19 20 |
| = | 180 | × | 20 19 |
| x | = | 3600 19 |
| x | = | 189.473684 |