198 25 | ( | c | + | 33 10 | ) | = | 329 25 | c |
| 方程左边 = | 198 25 | c | + | 198 25 | × | 33 10 |
| = | 198 25 | c | + | 3267 125 |
198 25 | c | + | 3267 125 | = | 329 25 | c |
198 25 | c | − | 329 25 | c | = | - | 3267 125 |
| - | 131 25 | c | = | - | 3267 125 |
3267 125 | = | 131 25 | c |
131 25 | c | = | 3267 125 |
| c | = | 3267 125 | ÷ | 131 25 |
| = | 3267 125 | × | 25 131 |
| = | 3267 5 | × | 1 131 |
| c | = | 3267 655 |
| c | = | 4.987786 |