66 5 | c | = | ( | 16 5 | + | c | ) | × | 397 50 |
| Right side of the equation = | 16 5 | × | 397 50 | + | c | × | 397 50 |
| = | 3176 125 | + | c | × | 397 50 |
66 5 | c | = | 3176 125 | + | 397 50 | c |
66 5 | c | − | 397 50 | c | = | 3176 125 |
263 50 | c | = | 3176 125 |
| c | = | 3176 125 | ÷ | 263 50 |
| = | 3176 125 | × | 50 263 |
| = | 3176 5 | × | 2 263 |
| c | = | 6352 1315 |
| c | = | 4.830418 |