( | 4500 | × | 12 | × | 9 10 | − | 60 100 | × | 70 | X | ( | 49 1000 | + | 2 100 | ) | ) | ÷ | ( | 40 100 | × | 70 | X | + | 5 100 | × | 70 | X | ) | = | 19 500 |
方程两边同时乘以: | ( | 40 100 | × | 70 | X | + | 5 100 | × | 70 | X | ) |
( | 4500 | × | 12 | × | 9 10 | − | 60 100 | × | 70 | X | ( | 49 1000 | + | 2 100 | ) | ) | = | 19 500 | ( | 40 100 | × | 70 | X | + | 5 100 | × | 70 | X | ) |
4500 | × | 12 | × | 9 10 | − | 60 100 | × | 70 | X | ( | 49 1000 | + | 2 100 | ) | = | 19 500 | ( | 40 100 | × | 70 | X | + | 5 100 | × | 70 | X | ) |
4500 | × | 12 | × | 9 10 | − | 60 100 | × | 70 | X | ( | 49 1000 | + | 2 100 | ) | = | 19 500 | × | 40 100 | × | 70 | X | + | 19 500 | × | 5 100 | × | 70 | X |
48600 | − | 42 | X | ( | 49 1000 | + | 2 100 | ) | = | 133 125 | X | + | 133 1000 | X |
48600 | − | 42 | X | ( | 49 1000 | + | 2 100 | ) | = | 1197 1000 | X |
48600 | − | 42 | X | × | 49 1000 | − | 42 | X | × | 2 100 | = | 1197 1000 | X |
48600 | − | 1029 500 | X | − | 21 25 | X | = | 1197 1000 | X |
48600 | − | 1449 500 | X | = | 1197 1000 | X |
- | 1449 500 | X | − | 1197 1000 | X | = | - | 48600 |
- | 819 200 | X | = | - | 48600 |
48600 | = | 819 200 | X |
819 200 | X | = | 48600 |
X | = | 48600 | ÷ | 819 200 |
= | 48600 | × | 200 819 |
= | 5400 | × | 200 91 |
X | = | 1080000 91 |
X | = | 11868.131868 |