1 10 | x | ÷ | ( | 8000 | + | x | ) | = | 1 10 | ÷ | 100 |
| 方程两边同时乘以: | ( | 8000 | + | x | ) |
1 10 | x | = | 1 10 | ÷ | 100 | × | ( | 8000 | + | x | ) |
1 10 | x | = | 1 10 | ÷ | 100 | × | 8000 | + | 1 10 | ÷ | 100 | × | x |
1 10 | x | = | 8 | + | 1 1000 | x |
1 10 | x | − | 1 1000 | x | = | 8 |
99 1000 | x | = | 8 |
| x | = | 8 | ÷ | 99 1000 |
| = | 8 | × | 1000 99 |
| x | = | 8000 99 |
| x | = | 80.808081 |