| ( | 156 | + | x | ) | × | 24 5 | = | 5 | x | + | 156 | × | 118 25 |
| 方程左边 = | 156 | × | 24 5 | + | x | × | 24 5 |
| = | 3744 5 | + | x | × | 24 5 |
3744 5 | + | 24 5 | x | = | 5 | x | + | 156 | × | 118 25 |
| 方程右边 = | 5 | x | + | 18408 25 |
3744 5 | + | 24 5 | x | = | 5 | x | + | 18408 25 |
24 5 | x | − | 5 | x | = | 18408 25 | − | 3744 5 |
| - | 1 5 | x | = | 18408 25 | − | 3744 5 |
| - | 1 5 | x | = | - | 312 25 |
312 25 | = | 1 5 | x |
1 5 | x | = | 312 25 |
| x | = | 312 25 | ÷ | 1 5 |
| = | 312 25 | × | 5 |
| = | 312 5 | × | 1 |
| x | = | 312 5 |
| x | = | 62.4 |