| ( | - | 94 | ) | ÷ | ( | 7 | + | 6 | ( | - | x | + | 10 | ) | ) | + | 2 | = | 4 |
| 方程两边同时乘以: | ( | 7 | + | 6 | ( | - | x | + | 10 | ) | ) |
| ( | - | 94 | ) | + | 2 | ( | 7 | + | 6 | ( | - | x | + | 10 | ) | ) | = | 4 | ( | 7 | + | 6 | ( | - | x | + | 10 | ) | ) |
| - | 94 | + | 2 | ( | 7 | + | 6 | ( | - | x | + | 10 | ) | ) | = | 4 | ( | 7 | + | 6 | ( | - | x | + | 10 | ) | ) |
| - | 94 | + | 2 | ( | 7 | + | 6 | ( | - | x | + | 10 | ) | ) | = | 4 | × | 7 | + | 4 | × | 6 | ( | - | x | + | 10 | ) |
| - | 94 | + | 2 | ( | 7 | + | 6 | ( | - | x | + | 10 | ) | ) | = | 28 | + | 24 | ( | - | x | + | 10 | ) |
| - | 94 | + | 2 | × | 7 | + | 2 | × | 6 | ( | - | x | + | 10 | ) | = | 28 | + | 24 | ( | - | x | + | 10 | ) |
| - | 94 | + | 2 | × | 7 | + | 2 | × | 6 | ( | - | x | + | 10 | ) | = | 28 | − | 24 | x | + | 24 | × | 10 |
| - | 94 | + | 14 | + | 12 | ( | - | x | + | 10 | ) | = | 28 | − | 24 | x | + | 240 |
| - | 80 | + | 12 | ( | - | x | + | 10 | ) | = | 268 | − | 24 | x |
| - | 80 | − | 12 | x | + | 12 | × | 10 | = | 268 | − | 24 | x |
| - | 80 | − | 12 | x | + | 120 | = | 268 | − | 24 | x |
| 40 | − | 12 | x | = | 268 | − | 24 | x |
| - | 12 | x | + | 24 | x | = | 268 | − | 40 |
| 12 | x | = | 268 | − | 40 |
| 12 | x | = | 228 |
| x | = | 228 | ÷ | 12 |
| = | 228 | × | 1 12 |
| = | 19 | × | 1 |
| x | = | 19 |