| ( | 2665 | + | x | ) | ÷ | ( | 4898 | + | x | ) | = | 60 100 |
| 方程两边同时乘以: | ( | 4898 | + | x | ) |
| ( | 2665 | + | x | ) | = | 60 100 | ( | 4898 | + | x | ) |
| 2665 | + | x | = | 60 100 | ( | 4898 | + | x | ) |
| 2665 | + | x | = | 60 100 | × | 4898 | + | 60 100 | x |
| 2665 | + | x | = | 14694 5 | + | 60 100 | x |
| x | − | 60 100 | x | = | 14694 5 | − | 2665 |
2 5 | x | = | 14694 5 | − | 2665 |
2 5 | x | = | 1369 5 |
| x | = | 1369 5 | ÷ | 2 5 |
| = | 1369 5 | × | 5 2 |
| = | 1369 | × | 1 2 |
| x | = | 1369 2 |
| x | = | 684.5 |