| ( | 7 | x | − | 11689 25 | ) | ( | 1 | + | 1 4 | ) | + | 4584 25 | = | 260 |
| Left side of the equation = | 7 | x | ( | 1 | + | 1 4 | ) | − | 11689 25 | ( | 1 | + | 1 4 | ) | + | 4584 25 |
| = | 7 | x | × | 1 | + | 7 | x | × | 1 4 | − | 11689 25 | ( | 1 | + | 1 4 | ) | + | 4584 25 |
| = | 7 | x | + | 7 4 | x | − | 11689 25 | ( | 1 | + | 1 4 | ) | + | 4584 25 |
| = | 35 4 | x | − | 11689 25 | ( | 1 | + | 1 4 | ) | + | 4584 25 |
| = | 35 4 | x | − | 11689 25 | × | 1 | − | 11689 25 | × | 1 4 | + | 4584 25 |
| = | 35 4 | x | − | 11689 25 | − | 11689 100 | + | 4584 25 |
| = | 35 4 | x | − | 40109 100 |
35 4 | x | − | 40109 100 | = | 260 |
35 4 | x | = | 260 | + | 40109 100 |
35 4 | x | = | 66109 100 |
| x | = | 66109 100 | ÷ | 35 4 |
| = | 66109 100 | × | 4 35 |
| = | 66109 25 | × | 1 35 |
| x | = | 66109 875 |
| x | = | 75.553143 |