| ( | 3 | ÷ | 4 | ) | ( | x | − | 10 | ) | = | ( | 3 | ÷ | 5 | ) | x | + | 10 |
| 方程左边 = | 3 | ÷ | 4 | × | ( | x | − | 10 | ) |
| = | 3 4 | ( | x | − | 10 | ) |
| = | 3 4 | x | − | 3 4 | × | 10 |
| = | 3 4 | x | − | 15 2 |
3 4 | x | − | 15 2 | = | ( | 3 | ÷ | 5 | ) | x | + | 10 |
| 方程右边 = | 3 | ÷ | 5 | × | x | + | 10 |
| = | 3 5 | x | + | 10 |
3 4 | x | − | 15 2 | = | 3 5 | x | + | 10 |
3 4 | x | − | 3 5 | x | = | 10 | + | 15 2 |
3 20 | x | = | 10 | + | 15 2 |
3 20 | x | = | 35 2 |
| x | = | 35 2 | ÷ | 3 20 |
| = | 35 2 | × | 20 3 |
| = | 35 | × | 10 3 |
| x | = | 350 3 |
| x | = | 116.666667 |