| ( | 189 10 | × | 2 5 | × | 4 | − | 2 | × | 10 | × | 63 100 | ) | ( | 9 2 | + | x | ) | = | ( | 189 10 | × | 64 25 | x | + | 2 | × | 10 | × | 8 5 | ) | x | − | ( | 189 10 | × | 2 5 | x | − | 2 | × | 10 | × | 63 100 | ) | x |
| 方程左边 = | 189 10 | × | 2 5 | × | 4 | ( | 9 2 | + | x | ) | − | 2 | × | 10 | × | 63 100 | ( | 9 2 | + | x | ) |
| = | 756 25 | ( | 9 2 | + | x | ) | − | 63 5 | ( | 9 2 | + | x | ) |
| = | 756 25 | × | 9 2 | + | 756 25 | x | − | 63 5 | ( | 9 2 | + | x | ) |
| = | 3402 25 | + | 756 25 | x | − | 63 5 | ( | 9 2 | + | x | ) |
| = | 3402 25 | + | 756 25 | x | − | 63 5 | × | 9 2 | − | 63 5 | x |
| = | 3402 25 | + | 756 25 | x | − | 567 10 | − | 63 5 | x |
| = | 3969 50 | + | 441 25 | x |
3969 50 | + | 441 25 | x | = | ( | 189 10 | × | 64 25 | x | + | 2 | × | 10 | × | 8 5 | ) | x | − | ( | 189 10 | × | 2 5 | x | − | 2 | × | 10 | × | 63 100 | ) | x |
| 方程右边 = | 189 10 | × | 64 25 | x | x | + | 2 | × | 10 | × | 8 5 | x | − | ( | 189 10 | × | 2 5 | x | − | 2 | × | 10 | × | 63 100 | ) | x |
| = | 6048 125 | x | x | + | 32 | x | − | ( | 189 10 | × | 2 5 | x | − | 2 | × | 10 | × | 63 100 | ) | x |
| = | 6048 125 | x | x | + | 32 | x | − | 189 10 | × | 2 5 | x | x | + | 2 | × | 10 | × | 63 100 |
| = | 6048 125 | x | x | + | 32 | x | − | 189 25 | x | x | + | 63 5 | x |
| = | 6048 125 | x | x | + | 223 5 | x | − | 189 25 | x | x |
3969 50 | + | 441 25 | x | = | 6048 125 | x | x | + | 223 5 | x | − | 189 25 | x | x |