| - | 1200 | + | ( | 400 | − | 170 | ( | 1 | − | x | ) | ) | × | 28251 5000 | + | 100 | × | 161 500 | = | 0 |
| Left side of the equation = | - | 1200 | + | ( | 400 | − | 170 | ( | 1 | − | x | ) | ) | × | 28251 5000 | + | 161 5 |
| = | - | 5839 5 | + | ( | 400 | − | 170 | ( | 1 | − | x | ) | ) | × | 28251 5000 |
| - | 5839 5 | + | ( | 400 | − | 170 | ( | 1 | − | x | ) | ) | × | 28251 5000 | = | 0 |
| Left side of the equation = | - | 5839 5 | + | 400 | × | 28251 5000 | − | 170 | ( | 1 | − | x | ) | × | 28251 5000 |
| = | - | 5839 5 | + | 56502 25 | − | 480267 500 | ( | 1 | − | x | ) |
| = | 27307 25 | − | 480267 500 | ( | 1 | − | x | ) |
| = | 27307 25 | − | 480267 500 | × | 1 | + | 480267 500 | x |
| = | 27307 25 | − | 480267 500 | + | 480267 500 | x |
| = | 65873 500 | + | 480267 500 | x |
65873 500 | + | 480267 500 | x | = | 0 |
480267 500 | x | = | 0 | − | 65873 500 |
480267 500 | x | = | - | 65873 500 |
| x | = | - | 65873 500 | ÷ | 480267 500 |
| = | - | 65873 500 | × | 500 480267 |
| = | - | 65873 | × | 1 480267 |
| x | = | - | 65873 480267 |
| x | = | - 0.137159 |