| x | + | x | × | 1 20 | + | ( | x | + | x | × | 1 20 | ) | × | 9 100 | = | 2570000 |
| Left side of the equation = | 21 20 | x | + | ( | x | + | x | × | 1 20 | ) | × | 9 100 |
21 20 | x | + | ( | x | + | x | × | 1 20 | ) | × | 9 100 | = | 2570000 |
| Left side of the equation = | 21 20 | x | + | x | × | 9 100 | + | x | × | 1 20 | × | 9 100 |
| = | 21 20 | x | + | x | × | 9 100 | + | x | × | 9 2000 |
| = | 2289 2000 | x |
2289 2000 | x | = | 2570000 |
| x | = | 2570000 | ÷ | 2289 2000 |
| = | 2570000 | × | 2000 2289 |
| x | = | 5140000000 2289 |
| x | = | 2245522.062036 |