( | x | + | 79 | ) | ÷ | ( | x | + | 148 | ) | = | 7 10 |
方程两边同时乘以: | ( | x | + | 148 | ) |
( | x | + | 79 | ) | = | 7 10 | ( | x | + | 148 | ) |
x | + | 79 | = | 7 10 | ( | x | + | 148 | ) |
x | + | 79 | = | 7 10 | x | + | 7 10 | × | 148 |
x | + | 79 | = | 7 10 | x | + | 518 5 |
x | − | 7 10 | x | = | 518 5 | − | 79 |
3 10 | x | = | 518 5 | − | 79 |
3 10 | x | = | 123 5 |
x | = | 123 5 | ÷ | 3 10 |
= | 123 5 | × | 10 3 |
= | 41 | × | 2 |
x | = | 82 |