507 1000 | = | ( | 78573 25 | ÷ | x | − | 3137 50 | ) | − | ( | 18300000 | ÷ | 486 25 | × | x | ( | x | + | 3137 50 | ) | ) |
507 1000 | = | 78573 25 | ÷ | x | − | 3137 50 | − | ( | 18300000 | ÷ | 486 25 | × | x | ( | x | + | 3137 50 | ) | ) |
| 方程两边同时乘以: | x |
507 1000 | x | = | 78573 25 | − | 3137 50 | x | − | ( | 18300000 | ÷ | 486 25 | × | x | ( | x | + | 3137 50 | ) | ) | x |
507 1000 | x | = | 78573 25 | − | 3137 50 | x | − | 18300000 | ÷ | 486 25 | × | x | ( | x | + | 3137 50 | ) | x |
507 1000 | x | = | 78573 25 | − | 3137 50 | x | − | 76250000 81 | x | ( | x | + | 3137 50 | ) | x |
507 1000 | x | = | 78573 25 | − | 3137 50 | x | − | 76250000 81 | x | x | x | − | 76250000 81 | x | × | 3137 50 | x |