| x | ÷ | 150 | + | 20 | ( | x | ÷ | 150 | ) | × | 50 100 | + | ( | x | ÷ | 150 | ) | × | 10 100 | = | x | + | ( | x | × | 40 100 | ) |
| Left side of the equation = | x | × | 1 150 | + | 10 | ( | x | ÷ | 150 | ) | + | ( | x | ÷ | 150 | ) | × | 10 100 |
1 150 | x | + | 10 | ( | x | ÷ | 150 | ) | + | ( | x | ÷ | 150 | ) | × | 10 100 | = | x | + | ( | x | × | 40 100 | ) |
| Left side of the equation = | 1 150 | x | + | 10 | x | ÷ | 150 | + | ( | x | ÷ | 150 | ) | × | 10 100 |
| = | 1 150 | x | + | 1 15 | x | + | ( | x | ÷ | 150 | ) | × | 10 100 |
| = | 11 150 | x | + | ( | x | ÷ | 150 | ) | × | 10 100 |
| = | 11 150 | x | + | x | ÷ | 150 | × | 10 100 |
| = | 11 150 | x | + | x | × | 1 1500 |
| = | 37 500 | x |
37 500 | x | = | x | + | ( | x | × | 40 100 | ) |
| Right side of the equation = | x | + | x | × | 40 100 |
| = | 7 5 | x |
37 500 | x | = | 7 5 | x |
37 500 | x | − | 7 5 | x | = | 0 |
| - | 663 500 | x | = | 0 |
| - | 0 | = | 663 500 | x |
663 500 | x | = | - | 0 |
| x | = | - | 0 | ÷ | 663 500 |
| = | - | 0 | × | 500 663 |
| x | = | 0 |