| ( | 9 2 | × | 16 | x | x | ) | ÷ | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | + | 25000000 | ÷ | ( | 1000 | x | × | 49 5 | ) | − | 40 | = | 0 |
| 方程两边同时乘以: | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) |
| ( | 9 2 | × | 16 | x | x | ) | + | 25000000 | ÷ | ( | 1000 | x | × | 49 5 | ) | × | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | − | 40 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | = | 0 |
9 2 | × | 16 | x | x | + | 25000000 | ÷ | ( | 1000 | x | × | 49 5 | ) | × | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | − | 40 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | = | 0 |
| 72 | x | x | + | 25000000 | ÷ | ( | 1000 | x | × | 49 5 | ) | × | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | − | 40 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | = | 0 |
| 方程两边同时乘以: | ( | 1000 | x | × | 49 5 | ) |
| 72 | x | x | ( | 1000 | x | × | 49 5 | ) | + | 25000000 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | − | 40 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | ( | 1000 | x | × | 49 5 | ) | = | 0 |
| 72 | x | x | × | 1000 | x | × | 49 5 | + | 25000000 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | − | 40 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | ( | 1000 | x | × | 49 5 | ) | = | 0 |
| 705600 | x | x | x | + | 25000000 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | − | 40 | ( | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | × | 4 | ) | ( | 1000 | x | × | 49 5 | ) | = | 0 |
| 705600 | x | x | x | + | 25000000 | × | 2 | × | 49 5 | × | 157 50 | × | 157 50 | × | 4 | × | 4 | × | 4 | = | 0 |