| ( | 1112 5 | ( | 1 | + | 15 100 | ) | ) | + | ( | 3 100 | x | ) | = | x |
| 方程左边 = | 1112 5 | ( | 1 | + | 15 100 | ) | + | ( | 3 100 | x | ) |
| = | 1112 5 | × | 1 | + | 1112 5 | × | 15 100 | + | ( | 3 100 | x | ) |
| = | 1112 5 | + | 834 25 | + | ( | 3 100 | x | ) |
| = | 6394 25 | + | ( | 3 100 | x | ) |
| = | 6394 25 | + | 3 100 | x |
6394 25 | + | 3 100 | x | = | x |
3 100 | x | − | x | = | - | 6394 25 |
| - | 97 100 | x | = | - | 6394 25 |
6394 25 | = | 97 100 | x |
97 100 | x | = | 6394 25 |
| x | = | 6394 25 | ÷ | 97 100 |
| = | 6394 25 | × | 100 97 |
| = | 6394 | × | 4 97 |
| x | = | 25576 97 |
| x | = | 263.670103 |