| x | + | 2200 | + | 1 5 | ( | x | + | 2200 | ) | + | 3 5 | ( | x | + | 2200 | + | 1 5 | ( | x | + | 2200 | ) | ) | − | 23200 | = | 0 |
| Left side of the equation = | x | − | 21000 | + | 1 5 | ( | x | + | 2200 | ) | + | 3 5 | ( | x | + | 2200 | + | 1 5 | ( | x | + | 2200 | ) | ) |
| x | − | 21000 | + | 1 5 | ( | x | + | 2200 | ) | + | 3 5 | ( | x | + | 2200 | + | 1 5 | ( | x | + | 2200 | ) | ) | = | 0 |
| Left side of the equation = | x | − | 21000 | + | 1 5 | x | + | 1 5 | × | 2200 | + | 3 5 | ( | x | + | 2200 | + | 1 5 | ( | x | + | 2200 | ) | ) |
| = | x | − | 21000 | + | 1 5 | x | + | 440 | + | 3 5 | ( | x | + | 2200 | + | 1 5 | ( | x | + | 2200 | ) | ) |
| = | 6 5 | x | − | 20560 | + | 3 5 | ( | x | + | 2200 | + | 1 5 | ( | x | + | 2200 | ) | ) |
| = | 6 5 | x | − | 20560 | + | 3 5 | x | + | 3 5 | × | 2200 | + | 3 5 | × | 1 5 | ( | x | + | 2200 | ) |
| = | 6 5 | x | − | 20560 | + | 3 5 | x | + | 1320 | + | 3 25 | ( | x | + | 2200 | ) |
| = | 9 5 | x | − | 19240 | + | 3 25 | ( | x | + | 2200 | ) |
| = | 9 5 | x | − | 19240 | + | 3 25 | x | + | 3 25 | × | 2200 |
| = | 9 5 | x | − | 19240 | + | 3 25 | x | + | 264 |
| = | 48 25 | x | − | 18976 |
48 25 | x | − | 18976 | = | 0 |
48 25 | x | = | 0 | + | 18976 |
48 25 | x | = | 18976 |
| x | = | 18976 | ÷ | 48 25 |
| = | 18976 | × | 25 48 |
| = | 1186 | × | 25 3 |
| x | = | 29650 3 |
| x | = | 9883.333333 |