( | X | − | 200 | − | 300 | ) | ( | 1 | − | 25 100 | ) | − | 55 | = | ( | X | − | 200 | ) | ( | 1 | − | 25 100 | ) | − | 55 |
Left side of the equation = | X | ( | 1 | − | 25 100 | ) | − | 200 | ( | 1 | − | 25 100 | ) | − | 300 | ( | 1 | − | 25 100 | ) | − | 55 |
= | X | × | 1 | − | X | × | 25 100 | − | 200 | ( | 1 | − | 25 100 | ) | − | 300 | ( | 1 | − | 25 100 | ) | − | 55 |
= | 3 4 | X | − | 200 | ( | 1 | − | 25 100 | ) | − | 300 | ( | 1 | − | 25 100 | ) | − | 55 |
= | 3 4 | X | − | 200 | × | 1 | + | 200 | × | 25 100 | − | 300 | ( | 1 | − | 25 100 | ) | − | 55 |
= | 3 4 | X | − | 200 | + | 50 | − | 300 | ( | 1 | − | 25 100 | ) | − | 55 |
= | 3 4 | X | − | 205 | − | 300 | ( | 1 | − | 25 100 | ) |
= | 3 4 | X | − | 205 | − | 300 | × | 1 | + | 300 | × | 25 100 |
= | 3 4 | X | − | 205 | − | 300 | + | 75 |
= | 3 4 | X | − | 430 |
3 4 | X | − | 430 | = | ( | X | − | 200 | ) | ( | 1 | − | 25 100 | ) | − | 55 |
Right side of the equation = | X | ( | 1 | − | 25 100 | ) | − | 200 | ( | 1 | − | 25 100 | ) | − | 55 |
= | X | × | 1 | − | X | × | 25 100 | − | 200 | ( | 1 | − | 25 100 | ) | − | 55 |
= | 3 4 | X | − | 200 | ( | 1 | − | 25 100 | ) | − | 55 |
= | 3 4 | X | − | 200 | × | 1 | + | 200 | × | 25 100 | − | 55 |
= | 3 4 | X | − | 200 | + | 50 | − | 55 |
= | 3 4 | X | − | 205 |
3 4 | X | − | 430 | = | 3 4 | X | − | 205 |
3 4 | X | − | 3 4 | X | = | - | 205 | + | 430 |
0 | X | = | - | 205 | + | 430 |
0 | X | = | 225 |