66 5 | c | = | ( | c | + | 3 | ) | × | 793 100 |
| 方程右边 = | c | × | 793 100 | + | 3 | × | 793 100 |
| = | c | × | 793 100 | + | 2379 100 |
66 5 | c | = | 793 100 | c | + | 2379 100 |
66 5 | c | − | 793 100 | c | = | 2379 100 |
527 100 | c | = | 2379 100 |
| c | = | 2379 100 | ÷ | 527 100 |
| = | 2379 100 | × | 100 527 |
| = | 2379 | × | 1 527 |
| c | = | 2379 527 |
| c | = | 4.514231 |