4 | ÷ | ( | 4 | + | n | ) | + | 10 100 | = | 9 | ÷ | ( | 9 | + | n | ) |
方程两边同时乘以: | ( | 4 | + | n | ) | , | ( | 9 | + | n | ) |
4 | ( | 9 | + | n | ) | + | 10 100 | ( | 4 | + | n | ) | ( | 9 | + | n | ) | = | 9 | ( | 4 | + | n | ) |
4 | × | 9 | + | 4 | n | + | 10 100 | ( | 4 | + | n | ) | ( | 9 | + | n | ) | = | 9 | ( | 4 | + | n | ) |
4 | × | 9 | + | 4 | n | + | 10 100 | ( | 4 | + | n | ) | ( | 9 | + | n | ) | = | 9 | × | 4 | + | 9 | n |
36 | + | 4 | n | + | 10 100 | ( | 4 | + | n | ) | ( | 9 | + | n | ) | = | 36 | + | 9 | n |
36 | + | 4 | n | + | 10 100 | × | 4 | ( | 9 | + | n | ) | + | 10 100 | n | ( | 9 | + | n | ) | = | 36 | + | 9 | n |
36 | + | 4 | n | + | 2 5 | ( | 9 | + | n | ) | + | 10 100 | n | ( | 9 | + | n | ) | = | 36 | + | 9 | n |
36 | + | 4 | n | + | 2 5 | × | 9 | + | 2 5 | n | + | 10 100 | n | ( | 9 | + | n | ) | = | 36 | + | 9 | n |
36 | + | 4 | n | + | 18 5 | + | 2 5 | n | + | 10 100 | n | ( | 9 | + | n | ) | = | 36 | + | 9 | n |
198 5 | + | 22 5 | n | + | 10 100 | n | ( | 9 | + | n | ) | = | 36 | + | 9 | n |
198 5 | + | 22 5 | n | + | 10 100 | n | × | 9 | + | 10 100 | n | n | = | 36 | + | 9 | n |
198 5 | + | 22 5 | n | + | 9 10 | n | + | 10 100 | n | n | = | 36 | + | 9 | n |
198 5 | + | 53 10 | n | + | 10 100 | n | n | = | 36 | + | 9 | n |