| ( | 2 | n | − | 1 | ) | × | 100 | = | ( | 17 2 | + | 15 2 | ) | × | 60 |
| Left side of the equation = | 2 | n | × | 100 | − | 1 | × | 100 |
| = | 200 | n | − | 100 |
| 200 | n | − | 100 | = | ( | 17 2 | + | 15 2 | ) | × | 60 |
| Right side of the equation = | 17 2 | × | 60 | + | 15 2 | × | 60 |
| = | 510 | + | 450 |
| = | 960 |
| 200 | n | − | 100 | = | 960 |
| 200 | n | = | 960 | + | 100 |
| 200 | n | = | 1060 |
| n | = | 1060 | ÷ | 200 |
| = | 1060 | × | 1 200 |
| = | 53 | × | 1 10 |
| n | = | 53 10 |
| n | = | 5.3 |