| ( | 36 | ÷ | ( | 10 | + | 5 | q | ÷ | 3 | ) | ) | ÷ | ( | 18 5 | + | 90 | q | ) | = | 1 | ÷ | 9 |
| 方程两边同时乘以: | ( | 18 5 | + | 90 | q | ) |
| ( | 36 | ÷ | ( | 10 | + | 5 | q | ÷ | 3 | ) | ) | = | 1 | ÷ | 9 | × | ( | 18 5 | + | 90 | q | ) |
| 36 | ÷ | ( | 10 | + | 5 | q | ÷ | 3 | ) | = | 1 | ÷ | 9 | × | ( | 18 5 | + | 90 | q | ) |
| 36 | ÷ | ( | 10 | + | 5 | q | ÷ | 3 | ) | = | 1 | ÷ | 9 | × | 18 5 | + | 1 | ÷ | 9 | × | 90 | q |
| 36 | ÷ | ( | 10 | + | 5 | q | ÷ | 3 | ) | = | 2 5 | + | 10 | q |
| 方程两边同时乘以: | ( | 10 | + | 5 | q | ÷ | 3 | ) |
| 36 | = | 2 5 | ( | 10 | + | 5 | q | ÷ | 3 | ) | + | 10 | q | ( | 10 | + | 5 | q | ÷ | 3 | ) |
| 36 | = | 2 5 | × | 10 | + | 2 5 | × | 5 | q | ÷ | 3 | + | 10 | q | ( | 10 | + | 5 | q | ÷ | 3 | ) |
| 36 | = | 4 | + | 2 3 | q | + | 10 | q | ( | 10 | + | 5 | q | ÷ | 3 | ) |
| 36 | = | 4 | + | 2 3 | q | + | 10 | q | × | 10 | + | 10 | q | × | 5 | q | ÷ | 3 |
| 36 | = | 4 | + | 2 3 | q | + | 100 | q | + | 50 3 | q | q |
| 36 | = | 4 | + | 302 3 | q | + | 50 3 | q | q |