| ( | 75 | + | 60 | ) | x | = | ( | 50 | + | 60 | ) | ( | x | + | 1 | ÷ | 3 | ) |
| 方程左边 = | 75 | x | + | 60 | x |
| = | 135 | x |
| 135 | x | = | ( | 50 | + | 60 | ) | ( | x | + | 1 | ÷ | 3 | ) |
| 方程右边 = | 50 | ( | x | + | 1 | ÷ | 3 | ) | + | 60 | ( | x | + | 1 | ÷ | 3 | ) |
| = | 50 | x | + | 50 | × | 1 | ÷ | 3 | + | 60 | ( | x | + | 1 | ÷ | 3 | ) |
| = | 50 | x | + | 50 3 | + | 60 | ( | x | + | 1 | ÷ | 3 | ) |
| = | 50 | x | + | 50 3 | + | 60 | x | + | 60 | × | 1 | ÷ | 3 |
| = | 50 | x | + | 50 3 | + | 60 | x | + | 20 |
| = | 110 | x | + | 110 3 |
| 135 | x | = | 110 | x | + | 110 3 |
| 135 | x | − | 110 | x | = | 110 3 |
| 25 | x | = | 110 3 |
| x | = | 110 3 | ÷ | 25 |
| = | 110 3 | × | 1 25 |
| = | 22 3 | × | 1 5 |
| x | = | 22 15 |
| x | = | 1.466667 |