| 20 | x | + | ( | ( | x | ÷ | 2 | ) | × | 3 | ) | × | 30 | × | 3 | = | 1769 10 |
| Left side of the equation = | 20 | x | + | ( | ( | x | ÷ | 2 | ) | × | 3 | ) | × | 90 |
| 20 | x | + | ( | ( | x | ÷ | 2 | ) | × | 3 | ) | × | 90 | = | 1769 10 |
| Left side of the equation = | 20 | x | + | ( | x | ÷ | 2 | ) | × | 3 | × | 90 |
| = | 20 | x | + | ( | x | ÷ | 2 | ) | × | 270 |
| = | 20 | x | + | x | ÷ | 2 | × | 270 |
| = | 20 | x | + | x | × | 135 |
| = | 155 | x |
| 155 | x | = | 1769 10 |
| x | = | 1769 10 | ÷ | 155 |
| = | 1769 10 | × | 1 155 |
| x | = | 1769 1550 |
| x | = | 1.14129 |