| x | + | 102 25 | + | 3581 100 | + | ( | x | + | 102 25 | ) | × | 1 20 | + | ( | x | + | 102 25 | ) | × | 1 10 | + | ( | x | + | 102 25 | ) | × | 3 100 | = | 7469 100 |
| 方程左边 = | x | + | 3989 100 | + | ( | x | + | 102 25 | ) | × | 1 20 | + | ( | x | + | 102 25 | ) | × | 1 10 | + | ( | x | + | 102 25 | ) | × | 3 100 |
| x | + | 3989 100 | + | ( | x | + | 102 25 | ) | × | 1 20 | + | ( | x | + | 102 25 | ) | × | 1 10 | + | ( | x | + | 102 25 | ) | × | 3 100 | = | 7469 100 |
| 方程左边 = | x | + | 3989 100 | + | x | × | 1 20 | + | 102 25 | × | 1 20 | + | ( | x | + | 102 25 | ) | × | 1 10 | + | ( | x | + | 102 25 | ) | × | 3 100 |
| = | x | + | 3989 100 | + | x | × | 1 20 | + | 51 250 | + | ( | x | + | 102 25 | ) | × | 1 10 | + | ( | x | + | 102 25 | ) | × | 3 100 |
| = | 21 20 | x | + | 20047 500 | + | ( | x | + | 102 25 | ) | × | 1 10 | + | ( | x | + | 102 25 | ) | × | 3 100 |
| = | 21 20 | x | + | 20047 500 | + | x | × | 1 10 | + | 102 25 | × | 1 10 | + | ( | x | + | 102 25 | ) | × | 3 100 |
| = | 21 20 | x | + | 20047 500 | + | x | × | 1 10 | + | 51 125 | + | ( | x | + | 102 25 | ) | × | 3 100 |
| = | 23 20 | x | + | 20251 500 | + | ( | x | + | 102 25 | ) | × | 3 100 |
| = | 23 20 | x | + | 20251 500 | + | x | × | 3 100 | + | 102 25 | × | 3 100 |
| = | 23 20 | x | + | 20251 500 | + | x | × | 3 100 | + | 153 1250 |
| = | 59 50 | x | + | 101561 2500 |
59 50 | x | + | 101561 2500 | = | 7469 100 |
59 50 | x | = | 7469 100 | − | 101561 2500 |
59 50 | x | = | 21291 625 |
| x | = | 21291 625 | ÷ | 59 50 |
| = | 21291 625 | × | 50 59 |
| = | 21291 25 | × | 2 59 |
| x | = | 42582 1475 |
| x | = | 28.869153 |