( | 1 | − | X | ) | ( | 1 | − | X | ) | ( | 6 | − | X | ) | + | 36 | − | 18 | ( | 1 | − | X | ) | − | 4 | ( | 6 | − | X | ) | = | 0 |
Left side of the equation = | 1 | ( | 1 | − | X | ) | ( | 6 | − | X | ) | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) | + | 36 | − | 18 | ( | 1 | − | X | ) | − | 4 | ( | 6 | − | X | ) |
= | 1 | × | 1 | ( | 6 | − | X | ) | − | 1 | X | ( | 6 | − | X | ) | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) | + | 36 | − | 18 | ( | 1 | − | X | ) |
= | 1 | ( | 6 | − | X | ) | − | 1 | X | ( | 6 | − | X | ) | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) | + | 36 | − | 18 | ( | 1 | − | X | ) | − | 4 |
= | 1 | × | 6 | − | 1 | X | − | 1 | X | ( | 6 | − | X | ) | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) | + | 36 | − | 18 |
= | 6 | − | 1 | X | − | 1 | X | ( | 6 | − | X | ) | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) | + | 36 | − | 18 | ( | 1 | − | X | ) |
= | 42 | − | 1 | X | − | 1 | X | ( | 6 | − | X | ) | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) | − | 18 | ( | 1 | − | X | ) | − | 4 |
= | 42 | − | 1 | X | − | 1 | X | × | 6 | + | 1 | X | X | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) |
= | 42 | − | 1 | X | − | 6 | X | + | 1 | X | X | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) | − | 18 |
= | 42 | − | 7 | X | + | 1 | X | X | − | X | ( | 1 | − | X | ) | ( | 6 | − | X | ) | − | 18 | ( | 1 | − | X | ) | − | 4 |
= | 42 | − | 7 | X | + | 1 | X | X | − | X | × | 1 | ( | 6 | − | X | ) | + | X | X | ( | 6 | − | X | ) |
= | 42 | − | 7 | X | + | 1 | X | X | − | X | × | 1 | × | 6 | + | X | × | 1 | X |
= | 42 | − | 7 | X | + | 1 | X | X | − | X | × | 6 | + | X | × | 1 | X | + | X |
= | 42 | − | 13 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | ( | 6 | − | X | ) |
= | 42 | − | 13 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | × | 6 |
= | 42 | − | 13 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | × | 6 |
= | 42 | − | 13 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | × | 6 |
= | 24 | + | 5 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | × | 6 |
= | 24 | + | 5 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | × | 6 |
= | 24 | + | 5 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | × | 6 |
= | 0 | + | 9 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | × | 6 |
0 | + | 9 | X | + | 1 | X | X | + | X | × | 1 | X | + | X | X | × | 6 | = | 0 |