( | 16 | + | x | ) | ÷ | ( | 36 | + | x | ) | = | 9 | ÷ | 19 |
方程两边同时乘以: | ( | 36 | + | x | ) |
( | 16 | + | x | ) | = | 9 | ÷ | 19 | × | ( | 36 | + | x | ) |
16 | + | x | = | 9 | ÷ | 19 | × | ( | 36 | + | x | ) |
16 | + | x | = | 9 | ÷ | 19 | × | 36 | + | 9 | ÷ | 19 | × | x |
16 | + | x | = | 324 19 | + | 9 19 | x |
x | − | 9 19 | x | = | 324 19 | − | 16 |
10 19 | x | = | 324 19 | − | 16 |
10 19 | x | = | 20 19 |
x | = | 20 19 | ÷ | 10 19 |
= | 20 19 | × | 19 10 |
= | 2 | × | 1 |
x | = | 2 |