| ( | 121 10 | + | x | − | 11 10 | ) | ( | 195 | − | 10 | x | ) | − | 10 | x | = | 2305 |
| Left side of the equation = | 121 10 | ( | 195 | − | 10 | x | ) | + | x | ( | 195 | − | 10 | x | ) | − | 11 10 | ( | 195 | − | 10 | x | ) | − | 10 | x |
| = | 121 10 | × | 195 | − | 121 10 | × | 10 | x | + | x | ( | 195 | − | 10 | x | ) | − | 11 10 | ( | 195 | − | 10 | x | ) | − | 10 | x |
| = | 4719 2 | − | 121 | x | + | x | ( | 195 | − | 10 | x | ) | − | 11 10 | ( | 195 | − | 10 | x | ) | − | 10 | x |
| = | 4719 2 | − | 131 | x | + | x | ( | 195 | − | 10 | x | ) | − | 11 10 | ( | 195 | − | 10 | x | ) |
| = | 4719 2 | − | 131 | x | + | x | × | 195 | − | x | × | 10 | x | − | 11 10 | ( | 195 | − | 10 | x | ) |
| = | 4719 2 | + | 64 | x | − | x | × | 10 | x | − | 11 10 | ( | 195 | − | 10 | x | ) |
| = | 4719 2 | + | 64 | x | − | x | × | 10 | x | − | 11 10 | × | 195 | + | 11 10 | × | 10 | x |
| = | 4719 2 | + | 64 | x | − | x | × | 10 | x | − | 429 2 | + | 11 | x |
| = | 2145 | + | 75 | x | − | x | × | 10 | x |
| 2145 | + | 75 | x | − | x | × | 10 | x | = | 2305 |