| 62 | ÷ | ( | - | 4 | + | 2 | ( | 4 | x | + | 19 | ) | ) | + | 5 | = | 4 |
| 方程两边同时乘以: | ( | - | 4 | + | 2 | ( | 4 | x | + | 19 | ) | ) |
| 62 | + | 5 | ( | - | 4 | + | 2 | ( | 4 | x | + | 19 | ) | ) | = | 4 | ( | - | 4 | + | 2 | ( | 4 | x | + | 19 | ) | ) |
| 62 | − | 5 | × | 4 | + | 5 | × | 2 | ( | 4 | x | + | 19 | ) | = | 4 | ( | - | 4 | + | 2 | ( | 4 | x | + | 19 | ) | ) |
| 62 | − | 5 | × | 4 | + | 5 | × | 2 | ( | 4 | x | + | 19 | ) | = | - | 4 | × | 4 | + | 4 | × | 2 | ( | 4 | x | + | 19 | ) |
| 62 | − | 20 | + | 10 | ( | 4 | x | + | 19 | ) | = | - | 16 | + | 8 | ( | 4 | x | + | 19 | ) |
| 42 | + | 10 | ( | 4 | x | + | 19 | ) | = | - | 16 | + | 8 | ( | 4 | x | + | 19 | ) |
| 42 | + | 10 | × | 4 | x | + | 10 | × | 19 | = | - | 16 | + | 8 | ( | 4 | x | + | 19 | ) |
| 42 | + | 10 | × | 4 | x | + | 10 | × | 19 | = | - | 16 | + | 8 | × | 4 | x | + | 8 | × | 19 |
| 42 | + | 40 | x | + | 190 | = | - | 16 | + | 32 | x | + | 152 |
| 232 | + | 40 | x | = | 136 | + | 32 | x |
| 40 | x | − | 32 | x | = | 136 | − | 232 |
| 8 | x | = | 136 | − | 232 |
| 8 | x | = | - | 96 |
| x | = | - | 96 | ÷ | 8 |
| = | - | 96 | × | 1 8 |
| = | - | 12 | × | 1 |
| x | = | - | 12 |