| ( | 2400 | × | 959 1000 | + | x | ) | ÷ | ( | 2400 | + | x | ) | = | 99 100 |
| 方程两边同时乘以: | ( | 2400 | + | x | ) |
| ( | 2400 | × | 959 1000 | + | x | ) | = | 99 100 | ( | 2400 | + | x | ) |
| 2400 | × | 959 1000 | + | x | = | 99 100 | ( | 2400 | + | x | ) |
| 2400 | × | 959 1000 | + | x | = | 99 100 | × | 2400 | + | 99 100 | x |
11508 5 | + | x | = | 2376 | + | 99 100 | x |
| x | − | 99 100 | x | = | 2376 | − | 11508 5 |
1 100 | x | = | 2376 | − | 11508 5 |
1 100 | x | = | 372 5 |
| x | = | 372 5 | ÷ | 1 100 |
| = | 372 5 | × | 100 |
| = | 372 | × | 20 |
| x | = | 7440 |