1307 100 | c | = | ( | 33 10 | + | c | ) | × | 198 25 |
| 方程右边 = | 33 10 | × | 198 25 | + | c | × | 198 25 |
| = | 3267 125 | + | c | × | 198 25 |
1307 100 | c | = | 3267 125 | + | 198 25 | c |
1307 100 | c | − | 198 25 | c | = | 3267 125 |
103 20 | c | = | 3267 125 |
| c | = | 3267 125 | ÷ | 103 20 |
| = | 3267 125 | × | 20 103 |
| = | 3267 25 | × | 4 103 |
| c | = | 13068 2575 |
| c | = | 5.074951 |