| 2 | × | 8507 10000 | x | = | 4197 5000 | ( | x | + | 8507 10000 | ) |
| 方程左边 = | 8507 5000 | x |
8507 5000 | x | = | 4197 5000 | ( | x | + | 8507 10000 | ) |
| 方程右边 = | 4197 5000 | x | + | 4197 5000 | × | 8507 10000 |
| = | 4197 5000 | x | + | 35703879 50000000 |
8507 5000 | x | = | 4197 5000 | x | + | 35703879 50000000 |
8507 5000 | x | − | 4197 5000 | x | = | 35703879 50000000 |
431 500 | x | = | 35703879 50000000 |
| x | = | 35703879 50000000 | ÷ | 431 500 |
| = | 35703879 50000000 | × | 500 431 |
| = | 35703879 100000 | × | 1 431 |
| x | = | 35703879 43100000 |
| x | = | 0.828396 |