( | 4500 | × | 12 | × | 9 10 | − | 60 100 | × | 70 | A | ( | 49 1000 | + | 2 100 | ) | ) | ÷ | ( | 40 100 | × | 70 | A | + | 5 100 | × | 7 | A | ) | = | 19 500 |
方程两边同时乘以: | ( | 40 100 | × | 70 | A | + | 5 100 | × | 7 | A | ) |
( | 4500 | × | 12 | × | 9 10 | − | 60 100 | × | 70 | A | ( | 49 1000 | + | 2 100 | ) | ) | = | 19 500 | ( | 40 100 | × | 70 | A | + | 5 100 | × | 7 | A | ) |
4500 | × | 12 | × | 9 10 | − | 60 100 | × | 70 | A | ( | 49 1000 | + | 2 100 | ) | = | 19 500 | ( | 40 100 | × | 70 | A | + | 5 100 | × | 7 | A | ) |
4500 | × | 12 | × | 9 10 | − | 60 100 | × | 70 | A | ( | 49 1000 | + | 2 100 | ) | = | 19 500 | × | 40 100 | × | 70 | A | + | 19 500 | × | 5 100 | × | 7 | A |
48600 | − | 42 | A | ( | 49 1000 | + | 2 100 | ) | = | 133 125 | A | + | 133 10000 | A |
48600 | − | 42 | A | ( | 49 1000 | + | 2 100 | ) | = | 10773 10000 | A |
48600 | − | 42 | A | × | 49 1000 | − | 42 | A | × | 2 100 | = | 10773 10000 | A |
48600 | − | 1029 500 | A | − | 21 25 | A | = | 10773 10000 | A |
48600 | − | 1449 500 | A | = | 10773 10000 | A |
- | 1449 500 | A | − | 10773 10000 | A | = | - | 48600 |
- | 39753 10000 | A | = | - | 48600 |
48600 | = | 39753 10000 | A |
39753 10000 | A | = | 48600 |
A | = | 48600 | ÷ | 39753 10000 |
= | 48600 | × | 10000 39753 |
= | 5400 | × | 10000 4417 |
A | = | 54000000 4417 |
A | = | 12225.492416 |