| ( | 1800 | − | 180 | ) | × | 135 | ( | x | × | 0 | − | 135 2 | ) | + | 180 | x | × | 2 | ÷ | 2 | = | 66667 10000 | × | 9161 | ( | 1536 | − | x | × | 0 | ) |
| 方程左边 = | ( | 1800 | − | 180 | ) | × | 135 | ( | x | × | 0 | − | 135 2 | ) | + | 180 | x |
| ( | 1800 | − | 180 | ) | × | 135 | ( | x | × | 0 | − | 135 2 | ) | + | 180 | x | = | 66667 10000 | × | 9161 | ( | 1536 | − | x | × | 0 | ) |
| 方程左边 = | 1800 | × | 135 | ( | x | × | 0 | − | 135 2 | ) | − | 180 | × | 135 | ( | x | × | 0 | − | 135 2 | ) | + | 180 | x |
| = | 243000 | ( | x | × | 0 | − | 135 2 | ) | − | 24300 | ( | x | × | 0 | − | 135 2 | ) | + | 180 | x |
| = | 243000 | x | × | 0 | − | 243000 | × | 135 2 | − | 24300 | ( | x | × | 0 | − | 135 2 | ) | + | 180 | x |
| = | 0 | x | − | 16402500 | − | 24300 | ( | x | × | 0 | − | 135 2 | ) | + | 180 | x |
| = | 180 | x | − | 16402500 | − | 24300 | ( | x | × | 0 | − | 135 2 | ) |
| = | 180 | x | − | 16402500 | − | 24300 | x | × | 0 | + | 24300 | × | 135 2 |
| = | 180 | x | − | 16402500 | − | 0 | x | + | 1640250 |
| = | 180 | x | − | 14762250 |
| 180 | x | − | 14762250 | = | 66667 10000 | × | 9161 | ( | 1536 | − | x | × | 0 | ) |
| 方程右边 = | 610736387 10000 | ( | 1536 | − | x | × | 0 | ) |
| 180 | x | − | 14762250 | = | 610736387 10000 | ( | 1536 | − | x | × | 0 | ) |
| 方程右边 = | 610736387 10000 | × | 1536 | − | 610736387 10000 | x | × | 0 |