| ( | 1 | + | 10 100 | ) | F | − | F | = | 10000 | ( | 1 | + | 10 100 | ) | × | 3 | − | 10000 |
| Left side of the equation = | 1 | F | + | 10 100 | F | − | F |
| = | 1 10 | F |
1 10 | F | = | 10000 | ( | 1 | + | 10 100 | ) | × | 3 | − | 10000 |
| Right side of the equation = | 30000 | ( | 1 | + | 10 100 | ) | − | 10000 |
1 10 | F | = | 30000 | ( | 1 | + | 10 100 | ) | − | 10000 |
| Right side of the equation = | 30000 | × | 1 | + | 30000 | × | 10 100 | − | 10000 |
| = | 30000 | + | 3000 | − | 10000 |
| = | 23000 |
1 10 | F | = | 23000 |
| F | = | 23000 | ÷ | 1 10 |
| = | 23000 | × | 10 |
| F | = | 230000 |