11 10 | ( | 1 | + | x | ) | ÷ | 72 5 | + | x | = | 21 200 |
| Left side of the equation = | 11 144 | ( | 1 | + | x | ) | + | x |
11 144 | ( | 1 | + | x | ) | + | x | = | 21 200 |
| Left side of the equation = | 11 144 | × | 1 | + | 11 144 | x | + | x |
| = | 11 144 | + | 11 144 | x | + | x |
| = | 11 144 | + | 155 144 | x |
11 144 | + | 155 144 | x | = | 21 200 |
155 144 | x | = | 21 200 | − | 11 144 |
155 144 | x | = | 103 3600 |
| x | = | 103 3600 | ÷ | 155 144 |
| = | 103 3600 | × | 144 155 |
| = | 103 25 | × | 1 155 |
| x | = | 103 3875 |
| x | = | 0.026581 |