| ( | X | − | 1000 | − | 1000 | × | 3 5 | × | 1 10 | ) | × | 3 10 | + | ( | X | − | 1000 | − | 600 | × | 1 20 | ) | × | 1 2 | + | ( | X | − | 1000 | ) | × | 1 5 | = | 1000 | × | 3 100 |
| Left side of the equation = | X | × | 3 10 | − | 1000 | × | 3 10 | − | 1000 | × | 3 5 | × | 1 10 | × | 3 10 | + | ( | X | − | 1000 | − | 600 | × | 1 20 | ) | × | 1 2 | + | ( | X | − | 1000 | ) | × | 1 5 |
| = | X | × | 3 10 | − | 300 | − | 18 | + | ( | X | − | 1000 | − | 600 | × | 1 20 | ) | × | 1 2 | + | ( | X | − | 1000 | ) | × | 1 5 |
| = | 3 10 | X | − | 318 | + | ( | X | − | 1000 | − | 600 | × | 1 20 | ) | × | 1 2 | + | ( | X | − | 1000 | ) | × | 1 5 |
| = | 3 10 | X | − | 318 | + | X | × | 1 2 | − | 1000 | × | 1 2 | − | 600 | × | 1 20 | × | 1 2 | + | ( | X | − | 1000 | ) | × | 1 5 |
| = | 3 10 | X | − | 318 | + | X | × | 1 2 | − | 500 | − | 15 | + | ( | X | − | 1000 | ) | × | 1 5 |
| = | 4 5 | X | − | 833 | + | ( | X | − | 1000 | ) | × | 1 5 |
| = | 4 5 | X | − | 833 | + | X | × | 1 5 | − | 1000 | × | 1 5 |
| = | 4 5 | X | − | 833 | + | X | × | 1 5 | − | 200 |
| = | 1 | X | − | 1033 |
| 1 | X | − | 1033 | = | 1000 | × | 3 100 |
| Right side of the equation = | 30 |
| 1 | X | − | 1033 | = | 30 |
| 1 | X | = | 30 | + | 1033 |
| X | = | 30 | + | 1033 |
| X | = | 1063 |