16 100 | = | 24 100 | + | r | × | 2 | + | 24 100 | r | × | 2 |
| Right side of the equation = | 24 100 | + | r | × | 2 | + | 12 25 | r |
| = | 24 100 | + | 62 25 | r |
16 100 | = | 24 100 | + | 62 25 | r |
| - | 62 25 | r | = | 24 100 | − | 16 100 |
| - | 62 25 | r | = | 2 25 |
| - | 2 25 | = | 62 25 | r |
62 25 | r | = | - | 2 25 |
| r | = | - | 2 25 | ÷ | 62 25 |
| = | - | 2 25 | × | 25 62 |
| = | - | 1 | × | 1 31 |
| r | = | - | 1 31 |
| r | = | - 0.032258 |