| 1 | − | 21971 10000 | × | 1 10 | = | x | − | 2 5 | × | 21971 10000 | × | 1 10 |
| Left side of the equation = | 1 | − | 21971 100000 |
| = | 78029 100000 |
78029 100000 | = | x | − | 2 5 | × | 21971 10000 | × | 1 10 |
| Right side of the equation = | x | − | 21971 250000 |
78029 100000 | = | x | − | 21971 250000 |
| - | x | = | - | 21971 250000 | − | 78029 100000 |
| x= | 434087 500000 |