1207 100 | c | = | ( | 7 2 | + | c | ) | × | 198 25 |
| Right side of the equation = | 7 2 | × | 198 25 | + | c | × | 198 25 |
| = | 693 25 | + | c | × | 198 25 |
1207 100 | c | = | 693 25 | + | 198 25 | c |
1207 100 | c | − | 198 25 | c | = | 693 25 |
83 20 | c | = | 693 25 |
| c | = | 693 25 | ÷ | 83 20 |
| = | 693 25 | × | 20 83 |
| = | 693 5 | × | 4 83 |
| c | = | 2772 415 |
| c | = | 6.679518 |