7021959 20 | ( | 1 | − | X | ) | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) | = | 85504409 100 |
方程左边 = | 7021959 20 | × | 1 | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) | − | 7021959 20 | X | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) |
= | 7021959 20 | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) | − | 7021959 20 | X | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) |
= | 7021959 20 | × | 1 | ( | 1 | − | X | ÷ | 2 | ) | − | 7021959 20 | X | ( | 1 | − | X | ÷ | 2 | ) | − | 7021959 20 | X | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) |
= | 7021959 20 | ( | 1 | − | X | ÷ | 2 | ) | − | 7021959 20 | X | ( | 1 | − | X | ÷ | 2 | ) | − | 7021959 20 | X | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) |
= | 7021959 20 | × | 1 | − | 7021959 20 | X | ÷ | 2 | − | 7021959 20 | X | ( | 1 | − | X | ÷ | 2 | ) | − | 7021959 20 | X | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) |
= | 7021959 20 | − | 7021959 40 | X | − | 7021959 20 | X | ( | 1 | − | X | ÷ | 2 | ) | − | 7021959 20 | X | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) |
= | 7021959 20 | − | 7021959 40 | X | − | 7021959 20 | X | × | 1 | + | 7021959 20 | X | X | ÷ | 2 | − | 7021959 20 | X |
= | 7021959 20 | − | 7021959 40 | X | − | 7021959 20 | X | + | 7021959 40 | X | X | − | 7021959 20 | X | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) |
= | 7021959 20 | − | 21065877 40 | X | + | 7021959 40 | X | X | − | 7021959 20 | X | ( | 1 | − | X | ) | ( | 1 | − | X | ÷ | 2 | ) |
= | 7021959 20 | − | 21065877 40 | X | + | 7021959 40 | X | X | − | 7021959 20 | X | × | 1 | ( | 1 | − | X | ÷ | 2 | ) | + | 7021959 20 | X |
= | 7021959 20 | − | 21065877 40 | X | + | 7021959 40 | X | X | − | 7021959 20 | X | ( | 1 | − | X | ÷ | 2 | ) | + | 7021959 20 | X | X |
= | 7021959 20 | − | 21065877 40 | X | + | 7021959 40 | X | X | − | 7021959 20 | X | × | 1 | + | 7021959 20 | X | X |
= | 7021959 20 | − | 21065877 40 | X | + | 7021959 40 | X | X | − | 7021959 20 | X | + | 7021959 40 | X | X | + | 7021959 20 |
= | 7021959 20 | − | 7021959 8 | X | + | 7021959 40 | X | X | + | 7021959 40 | X | X | + | 7021959 20 | X | X |
= | 7021959 20 | − | 7021959 8 | X | + | 7021959 40 | X | X | + | 7021959 40 | X | X | + | 7021959 20 | X | X |
= | 7021959 20 | − | 7021959 8 | X | + | 7021959 40 | X | X | + | 7021959 40 | X | X | + | 7021959 20 | X | X |
7021959 20 | − | 7021959 8 | X | + | 7021959 40 | X | X | + | 7021959 40 | X | X | + | 7021959 20 | X | X | = | 85504409 100 |