13 100 | x | + | ( | 1 | − | 13 100 | ) | x | × | 25 100 | = | x | − | 978431 25 |
| Left side of the equation = | 13 100 | x | + | 1 | x | × | 25 100 | − | 13 100 | x | × | 25 100 |
| = | 13 100 | x | + | 1 4 | x | − | 13 400 | x |
| = | 139 400 | x |
139 400 | x | = | x | − | 978431 25 |
139 400 | x | − | x | = | - | 978431 25 |
| - | 261 400 | x | = | - | 978431 25 |
978431 25 | = | 261 400 | x |
261 400 | x | = | 978431 25 |
| x | = | 978431 25 | ÷ | 261 400 |
| = | 978431 25 | × | 400 261 |
| = | 978431 | × | 16 261 |
| x | = | 15654896 261 |
| x | = | 539824 9 |
| x | = | 59980.444444 |