| ( | 2 | + | 3 2 | x | ) | x | = | 12 5 | ( | 243 80 | − | x | ) | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) |
| 方程左边 = | 2 | x | + | 3 2 | x | x |
| 2 | x | + | 3 2 | x | x | = | 12 5 | ( | 243 80 | − | x | ) | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) |
| 方程右边 = | 12 5 | × | 243 80 | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) | − | 12 5 | x | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) |
| = | 729 100 | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) | − | 12 5 | x | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) |
| = | 729 100 | × | 257 100 | + | 729 100 | × | 3 2 | ( | 30357 10000 | − | x | ) | − | 12 5 | x | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) |
| = | 187353 10000 | + | 2187 200 | ( | 30357 10000 | − | x | ) | − | 12 5 | x | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) |
| = | 187353 10000 | + | 2187 200 | × | 30357 10000 | − | 2187 200 | x | − | 12 5 | x | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) |
| = | 187353 10000 | + | 66390759 2000000 | − | 2187 200 | x | − | 12 5 | x | ( | 257 100 | + | 3 2 | ( | 30357 10000 | − | x | ) | ) |