1309 100 | c | = | ( | 7 2 | + | c | ) | × | 199 25 |
| Right side of the equation = | 7 2 | × | 199 25 | + | c | × | 199 25 |
| = | 1393 50 | + | c | × | 199 25 |
1309 100 | c | = | 1393 50 | + | 199 25 | c |
1309 100 | c | − | 199 25 | c | = | 1393 50 |
513 100 | c | = | 1393 50 |
| c | = | 1393 50 | ÷ | 513 100 |
| = | 1393 50 | × | 100 513 |
| = | 1393 | × | 2 513 |
| c | = | 2786 513 |
| c | = | 5.430799 |