| x | × | 2 | + | 13 | x | + | 14 | ÷ | 520 | × | x | × | 2 | + | 13 | x | − | 14 | = | x | × | 2 | − | 14 | x | + | 13 | ÷ | 520 | × | x | × | 2 | − | 13 | x | − | 14 | x |
| Left side of the equation = | x | × | 2 | + | 13 | x | + | 7 130 | x | + | 13 | x | − | 14 |
| = | 3647 130 | x | − | 14 |
3647 130 | x | − | 14 | = | x | × | 2 | − | 14 | x | + | 13 | ÷ | 520 | × | x | × | 2 | − | 13 | x | − | 14 | x |
| Right side of the equation = | x | × | 2 | − | 14 | x | + | 1 20 | x | − | 13 | x | − | 14 | x | − | 13 |
| = | - | 779 20 | x | − | 13 |
3647 130 | x | − | 14 | = | - | 779 20 | x | − | 13 |
3647 130 | x | + | 779 20 | x | = | - | 13 | + | 14 |
17421 260 | x | = | - | 13 | + | 14 |
17421 260 | x | = | 1 |
| x | = | 1 | ÷ | 17421 260 |
| = | 1 | × | 260 17421 |
| x | = | 260 17421 |
| x | = | 0.014925 |