199 250 | = | y | ÷ | 78 | ÷ | ( | y | ÷ | 78 | + | ( | 1 | − | y | ) | ÷ | 106 | ) |
| 方程两边同时乘以: | ( | y | ÷ | 78 | + | ( | 1 | − | y | ) | ÷ | 106 | ) |
199 250 | ( | y | ÷ | 78 | + | ( | 1 | − | y | ) | ÷ | 106 | ) | = | y | ÷ | 78 |
199 250 | y | ÷ | 78 | + | 199 250 | ( | 1 | − | y | ) | ÷ | 106 | = | y | ÷ | 78 |
199 19500 | y | + | 199 26500 | ( | 1 | − | y | ) | = | y | × | 1 78 |
199 19500 | y | + | 199 26500 | × | 1 | − | 199 26500 | y | = | 1 78 | y |
199 19500 | y | + | 199 26500 | − | 199 26500 | y | = | 1 78 | y |
1393 516750 | y | + | 199 26500 | = | 1 78 | y |
1393 516750 | y | − | 1 78 | y | = | - | 199 26500 |
| - | 872 86125 | y | = | - | 199 26500 |
199 26500 | = | 872 86125 | y |
872 86125 | y | = | 199 26500 |
| y | = | 199 26500 | ÷ | 872 86125 |
| = | 199 26500 | × | 86125 872 |
| = | 199 212 | × | 689 872 |
| y | = | 137111 184864 |
| y | = | 2587 3488 |
| y | = | 0.741686 |