2 | ÷ | 3 | × | ( | x | − | 2 | ) | + | 5 | ÷ | 7 | × | ( | 2 | x | − | 3 | ) | = | 10 | ÷ | 21 | × | ( | x | − | 2 | ) | − | 17 | ÷ | 21 | × | ( | 2 | x | − | 3 | ) |
方程左边 = | 2 3 | ( | x | − | 2 | ) | + | 5 7 | ( | 2 | x | − | 3 | ) |
2 3 | ( | x | − | 2 | ) | + | 5 7 | ( | 2 | x | − | 3 | ) | = | 10 | ÷ | 21 | × | ( | x | − | 2 | ) | − | 17 | ÷ | 21 | × | ( | 2 | x | − | 3 | ) |
方程左边 = | 2 3 | x | − | 2 3 | × | 2 | + | 5 7 | ( | 2 | x | − | 3 | ) |
= | 2 3 | x | − | 4 3 | + | 5 7 | ( | 2 | x | − | 3 | ) |
= | 2 3 | x | − | 4 3 | + | 5 7 | × | 2 | x | − | 5 7 | × | 3 |
= | 2 3 | x | − | 4 3 | + | 10 7 | x | − | 15 7 |
= | 44 21 | x | − | 73 21 |
44 21 | x | − | 73 21 | = | 10 | ÷ | 21 | × | ( | x | − | 2 | ) | − | 17 | ÷ | 21 | × | ( | 2 | x | − | 3 | ) |
方程右边 = | 10 21 | ( | x | − | 2 | ) | − | 17 21 | ( | 2 | x | − | 3 | ) |
44 21 | x | − | 73 21 | = | 10 21 | ( | x | − | 2 | ) | − | 17 21 | ( | 2 | x | − | 3 | ) |
方程右边 = | 10 21 | x | − | 10 21 | × | 2 | − | 17 21 | ( | 2 | x | − | 3 | ) |
= | 10 21 | x | − | 20 21 | − | 17 21 | ( | 2 | x | − | 3 | ) |
= | 10 21 | x | − | 20 21 | − | 17 21 | × | 2 | x | + | 17 21 | × | 3 |
= | 10 21 | x | − | 20 21 | − | 34 21 | x | + | 17 7 |
= | - | 8 7 | x | + | 31 21 |
44 21 | x | − | 73 21 | = | - | 8 7 | x | + | 31 21 |
44 21 | x | + | 8 7 | x | = | 31 21 | + | 73 21 |
68 21 | x | = | 31 21 | + | 73 21 |
68 21 | x | = | 104 21 |
x | = | 104 21 | ÷ | 68 21 |
= | 104 21 | × | 21 68 |
= | 26 | × | 1 17 |
x | = | 26 17 |
x | = | 1.529412 |