Y | = | 100 | + | 9 10 | ( | Y | − | 1 5 | Y | ) | + | 300 | + | 160 |
方程右边 = | 560 | + | 9 10 | ( | Y | − | 1 5 | Y | ) |
Y | = | 560 | + | 9 10 | ( | Y | − | 1 5 | Y | ) |
方程右边 = | 560 | + | 9 10 | Y | − | 9 10 | × | 1 5 | Y |
= | 560 | + | 9 10 | Y | − | 9 50 | Y |
= | 560 | + | 18 25 | Y |
Y | = | 560 | + | 18 25 | Y |
Y | − | 18 25 | Y | = | 560 |
7 25 | Y | = | 560 |
Y | = | 560 | ÷ | 7 25 |
= | 560 | × | 25 7 |
= | 80 | × | 25 |
Y | = | 2000 |