| ( | H | × | 1 2 | × | 26 | + | ( | H | × | 2 | + | 1 2 | ) | × | 1 2 | ) | × | 6 5 | + | 1 2 | × | 3 | × | 7 5 | = | 15 |
| Left side of the equation = | ( | H | × | 1 2 | × | 26 | + | ( | H | × | 2 | + | 1 2 | ) | × | 1 2 | ) | × | 6 5 | + | 21 10 |
| ( | H | × | 1 2 | × | 26 | + | ( | H | × | 2 | + | 1 2 | ) | × | 1 2 | ) | × | 6 5 | + | 21 10 | = | 15 |
| Left side of the equation = | H | × | 1 2 | × | 26 | × | 6 5 | + | ( | H | × | 2 | + | 1 2 | ) | × | 1 2 | × | 6 5 | + | 21 10 |
| = | H | × | 78 5 | + | ( | H | × | 2 | + | 1 2 | ) | × | 3 5 | + | 21 10 |
| = | 78 5 | H | + | H | × | 2 | × | 3 5 | + | 1 2 | × | 3 5 | + | 21 10 |
| = | 78 5 | H | + | H | × | 6 5 | + | 3 10 | + | 21 10 |
| = | 84 5 | H | + | 12 5 |
84 5 | H | + | 12 5 | = | 15 |
84 5 | H | = | 15 | − | 12 5 |
84 5 | H | = | 63 5 |
| H | = | 63 5 | ÷ | 84 5 |
| = | 63 5 | × | 5 84 |
| = | 3 | × | 1 4 |
| H | = | 3 4 |
| H | = | 0.75 |