| 15 | + | ( | x | × | 27 25 | + | 5 2 | ) | + | 3 20 | x | + | ( | 15 | × | 21 125 | ) | = | 37289 50 |
| 方程左边 = | 15 | + | x | × | 27 25 | + | 5 2 | + | 3 20 | x | + | ( | 15 | × | 21 125 | ) |
| = | 35 2 | + | 123 100 | x | + | ( | 15 | × | 21 125 | ) |
| = | 35 2 | + | 123 100 | x | + | 15 | × | 21 125 |
| = | 35 2 | + | 123 100 | x | + | 63 25 |
| = | 1001 50 | + | 123 100 | x |
1001 50 | + | 123 100 | x | = | 37289 50 |
123 100 | x | = | 37289 50 | − | 1001 50 |
123 100 | x | = | 18144 25 |
| x | = | 18144 25 | ÷ | 123 100 |
| = | 18144 25 | × | 100 123 |
| = | 6048 | × | 4 41 |
| x | = | 24192 41 |
| x | = | 590.04878 |