3 20 | = | 7 25 | x | × | 1 100000 | ( | 1 | + | 7 10 | ÷ | x | ) |
3 20 | = | 7 25 | x | × | 1 100000 | × | 1 | + | 7 25 | x | × | 1 100000 | × | 7 10 | ÷ | x |
3 20 | = | 7 2500000 | x | + | 49 25000000 | x | ÷ | x |
| - | 7 2500000 | x | = | 49 25000000 | × | 1 | ÷ | 1 | − | 3 20 |
| - | 7 2500000 | x | = | 49 25000000 | − | 3 20 |
| - | 7 2500000 | x | = | - | 3749951 25000000 |
3749951 25000000 | = | 7 2500000 | x |
7 2500000 | x | = | 3749951 25000000 |
| x | = | 3749951 25000000 | ÷ | 7 2500000 |
| = | 3749951 25000000 | × | 2500000 7 |
| = | 3749951 10 | × | 1 7 |
| x | = | 3749951 70 |
| x | = | 53570.728571 |