| ( | 19 4 | ( | 529 | + | X | ) | + | 107 | ) | ÷ | ( | 636 | + | X | ) | = | 0 |
| 方程两边同时乘以: | ( | 636 | + | X | ) |
| ( | 19 4 | ( | 529 | + | X | ) | + | 107 | ) | = | 0 |
19 4 | ( | 529 | + | X | ) | + | 107 | = | 0 |
19 4 | × | 529 | + | 19 4 | X | + | 107 | = | 0 |
10051 4 | + | 19 4 | X | + | 107 | = | 0 |
10479 4 | + | 19 4 | X | = | 0 |
19 4 | X | = | 0 | − | 10479 4 |
19 4 | X | = | - | 10479 4 |
| X | = | - | 10479 4 | ÷ | 19 4 |
| = | - | 10479 4 | × | 4 19 |
| = | - | 10479 | × | 1 19 |
| X | = | - | 10479 19 |
| X | = | - 551.526316 |