| 50 | ÷ | ( | 1 | + | y | ) | + | 1050 | ÷ | ( | 1 | + | y | ) | × | ( | 1 | + | y | ) | = | 950 |
| 方程两边同时乘以: | ( | 1 | + | y | ) |
| 50 | + | 1050 | ( | 1 | + | y | ) | = | 950 | ( | 1 | + | y | ) |
| 50 | + | 1050 | × | 1 | + | 1050 | y | = | 950 | ( | 1 | + | y | ) |
| 50 | + | 1050 | × | 1 | + | 1050 | y | = | 950 | × | 1 | + | 950 | y |
| 50 | + | 1050 | + | 1050 | y | = | 950 | + | 950 | y |
| 1100 | + | 1050 | y | = | 950 | + | 950 | y |
| 1050 | y | − | 950 | y | = | 950 | − | 1100 |
| 100 | y | = | 950 | − | 1100 |
| 100 | y | = | - | 150 |
| y | = | - | 150 | ÷ | 100 |
| = | - | 150 | × | 1 100 |
| = | - | 3 | × | 1 2 |
| y | = | - | 3 2 |
| y | = | - 1.5 |