( | 5 | ( | 31 | + | x | ) | + | 6 | ) | ÷ | ( | 36 | + | x | ) | = | 23 5 |
方程两边同时乘以: | ( | 36 | + | x | ) |
( | 5 | ( | 31 | + | x | ) | + | 6 | ) | = | 23 5 | ( | 36 | + | x | ) |
5 | ( | 31 | + | x | ) | + | 6 | = | 23 5 | ( | 36 | + | x | ) |
5 | ( | 31 | + | x | ) | + | 6 | = | 23 5 | × | 36 | + | 23 5 | x |
5 | ( | 31 | + | x | ) | + | 6 | = | 828 5 | + | 23 5 | x |
5 | × | 31 | + | 5 | x | + | 6 | = | 828 5 | + | 23 5 | x |
155 | + | 5 | x | + | 6 | = | 828 5 | + | 23 5 | x |
161 | + | 5 | x | = | 828 5 | + | 23 5 | x |
5 | x | − | 23 5 | x | = | 828 5 | − | 161 |
2 5 | x | = | 828 5 | − | 161 |
2 5 | x | = | 23 5 |
x | = | 23 5 | ÷ | 2 5 |
= | 23 5 | × | 5 2 |
= | 23 | × | 1 2 |
x | = | 23 2 |
x | = | 11.5 |