( | 60 | a | − | 54784 25 | − | ( | 60 | a | × | 13 100 | − | 170 | ) | × | 12 100 | ) | × | 75 100 | = | 3281 25 |
方程左边 = | 60 | a | × | 75 100 | − | 54784 25 | × | 75 100 | − | ( | 60 | a | × | 13 100 | − | 170 | ) | × | 12 100 | × | 75 100 |
= | 45 | a | − | 41088 25 | − | ( | 60 | a | × | 13 100 | − | 170 | ) | × | 9 100 |
= | 45 | a | − | 41088 25 | − | 60 | a | × | 13 100 | × | 9 100 | + | 170 | × | 9 100 |
= | 45 | a | − | 41088 25 | − | 351 500 | a | + | 153 10 |
= | 22149 500 | a | − | 81411 50 |
22149 500 | a | − | 81411 50 | = | 3281 25 |
22149 500 | a | = | 3281 25 | + | 81411 50 |
22149 500 | a | = | 87973 50 |
a | = | 87973 50 | ÷ | 22149 500 |
= | 87973 50 | × | 500 22149 |
= | 87973 | × | 10 22149 |
a | = | 879730 22149 |
a | = | 39.718723 |