( | 6379 20 | + | 3 20 | n | ) | ÷ | ( | 376 | + | n | ) | = | 2 5 |
方程两边同时乘以: | ( | 376 | + | n | ) |
( | 6379 20 | + | 3 20 | n | ) | = | 2 5 | ( | 376 | + | n | ) |
6379 20 | + | 3 20 | n | = | 2 5 | ( | 376 | + | n | ) |
6379 20 | + | 3 20 | n | = | 2 5 | × | 376 | + | 2 5 | n |
6379 20 | + | 3 20 | n | = | 752 5 | + | 2 5 | n |
3 20 | n | − | 2 5 | n | = | 752 5 | − | 6379 20 |
- | 1 4 | n | = | 752 5 | − | 6379 20 |
- | 1 4 | n | = | - | 3371 20 |
3371 20 | = | 1 4 | n |
1 4 | n | = | 3371 20 |
n | = | 3371 20 | ÷ | 1 4 |
= | 3371 20 | × | 4 |
= | 3371 5 | × | 1 |
n | = | 3371 5 |
n | = | 674.2 |