81 10 | × | 2083 | + | 6 | × | 3000 | + | 19 2 | x | = | 15 2 | ( | 2083 | + | 3000 | + | x | ) |
| 方程左边 = | 168723 10 | + | 18000 | + | 19 2 | x |
| = | 348723 10 | + | 19 2 | x |
348723 10 | + | 19 2 | x | = | 15 2 | ( | 2083 | + | 3000 | + | x | ) |
| 方程右边 = | 15 2 | × | 2083 | + | 15 2 | × | 3000 | + | 15 2 | x |
| = | 31245 2 | + | 22500 | + | 15 2 | x |
| = | 76245 2 | + | 15 2 | x |
348723 10 | + | 19 2 | x | = | 76245 2 | + | 15 2 | x |
19 2 | x | − | 15 2 | x | = | 76245 2 | − | 348723 10 |
| 2 | x | = | 76245 2 | − | 348723 10 |
| 2 | x | = | 16251 5 |
| x | = | 16251 5 | ÷ | 2 |
| = | 16251 5 | × | 1 2 |
| x | = | 16251 10 |
| x | = | 1625.1 |