| x | − | ( | ( | x | + | 7221111 50 | − | 30000 | ) | × | 1 5 | − | 16920 | − | 471111 50 | ) | = | 27000 |
| Left side of the equation = | x | − | ( | x | + | 7221111 50 | − | 30000 | ) | × | 1 5 | + | 16920 | + | 471111 50 |
| = | x | − | ( | x | + | 7221111 50 | − | 30000 | ) | × | 1 5 | + | 1317111 50 |
| = | x | − | x | × | 1 5 | − | 7221111 50 | × | 1 5 | + | 30000 | × | 1 5 | + | 1317111 50 |
| = | x | − | x | × | 1 5 | − | 7221111 250 | + | 6000 | + | 1317111 50 |
| = | 4 5 | x | + | 432222 125 |
4 5 | x | + | 432222 125 | = | 27000 |
4 5 | x | = | 27000 | − | 432222 125 |
4 5 | x | = | 2942778 125 |
| x | = | 2942778 125 | ÷ | 4 5 |
| = | 2942778 125 | × | 5 4 |
| = | 1471389 25 | × | 1 2 |
| x | = | 1471389 50 |
| x | = | 29427.78 |