19 2 | ÷ | ( | 36 | + | 9 20 | + | 9 20 | + | x | ) | = | 5 2 | ÷ | ( | 10 | − | 9 20 | − | 9 20 | − | x | ) |
| 方程两边同时乘以: | ( | 36 | + | 9 20 | + | 9 20 | + | x | ) | , | ( | 10 | − | 9 20 | − | 9 20 | − | x | ) |
19 2 | ( | 10 | − | 9 20 | − | 9 20 | − | x | ) | = | 5 2 | ( | 36 | + | 9 20 | + | 9 20 | + | x | ) |
19 2 | × | 10 | − | 19 2 | × | 9 20 | − | 19 2 | × | 9 20 | − | 19 2 | x | = | 5 2 | ( | 36 | + | 9 20 | + | 9 20 | + | x | ) |
19 2 | × | 10 | − | 19 2 | × | 9 20 | − | 19 2 | × | 9 20 | − | 19 2 | x | = | 5 2 | × | 36 | + | 5 2 | × | 9 20 | + | 5 2 | × | 9 20 | + | 5 2 | x |
| 95 | − | 171 40 | − | 171 40 | − | 19 2 | x | = | 90 | + | 9 8 | + | 9 8 | + | 5 2 | x |
1729 20 | − | 19 2 | x | = | 369 4 | + | 5 2 | x |
| - | 19 2 | x | − | 5 2 | x | = | 369 4 | − | 1729 20 |
| - | 12 | x | = | 369 4 | − | 1729 20 |
| - | 12 | x | = | 29 5 |
| - | 29 5 | = | 12 | x |
| 12 | x | = | - | 29 5 |
| x | = | - | 29 5 | ÷ | 12 |
| = | - | 29 5 | × | 1 12 |
| x | = | - | 29 60 |
| x | = | - 0.483333 |