4 | x | × | 2 | ÷ | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) | = | 21 20 | × | 10 | − | 2 |
Multiply both sides of the equation by: | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
4 | x | × | 2 | = | 21 20 | × | 10 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
4 | x | × | 2 | = | 21 20 | × | 10 | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | ( | 1 | − | x | ) | ( | 1 | − | x | ) | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | × | 1 | ( | 1 | − | x | ) | − | 378 | x | ( | 1 | − | x | ) | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | ( | 1 | − | x | ) | − | 378 | x | ( | 1 | − | x | ) | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | × | 1 | − | 378 | x | − | 378 | x | ( | 1 | − | x | ) | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | − | 378 | x | − | 378 | x | ( | 1 | − | x | ) | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | − | 378 | x | − | 378 | x | × | 1 | + | 378 | x | x | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | − | 378 | x | − | 378 | x | + | 378 | x | x | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | − | 756 | x | + | 378 | x | x | − | 2 | ( | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 | ) |
8 | x | = | 378 | − | 756 | x | + | 378 | x | x | − | 2 | ( | 1 | − | x | ) | × | 9 | ( | 1 | − | x | ) | × | 4 |
8 | x | = | 378 | − | 756 | x | + | 378 | x | x | − | 72 | ( | 1 | − | x | ) | ( | 1 | − | x | ) |
8 | x | = | 378 | − | 756 | x | + | 378 | x | x | − | 72 | × | 1 | ( | 1 | − | x | ) | + | 72 | x | ( | 1 | − | x | ) |
8 | x | = | 378 | − | 756 | x | + | 378 | x | x | − | 72 | ( | 1 | − | x | ) | + | 72 | x | ( | 1 | − | x | ) |
8 | x | = | 378 | − | 756 | x | + | 378 | x | x | − | 72 | × | 1 | + | 72 | x | + | 72 | x |
8 | x | = | 378 | − | 756 | x | + | 378 | x | x | − | 72 | + | 72 | x | + | 72 | x | ( | 1 | − | x | ) |
8 | x | = | 306 | − | 684 | x | + | 378 | x | x | + | 72 | x | ( | 1 | − | x | ) |
8 | x | = | 306 | − | 684 | x | + | 378 | x | x | + | 72 | x | × | 1 | − | 72 | x | x |
8 | x | = | 306 | − | 684 | x | + | 378 | x | x | + | 72 | x | − | 72 | x | x |
8 | x | = | 306 | − | 612 | x | + | 378 | x | x | − | 72 | x | x |