| ( | 7600 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | ) | = | 550 |
| 7600 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | + | 10000 | ÷ | ( | x | + | 99 | × | 3 25 | ) | = | 550 |
| 方程两边同时乘以: | ( | x | + | 99 | × | 3 25 | ) |
| 7600 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | = | 550 | ( | x | + | 99 | × | 3 25 | ) |
| 7600 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | = | 550 | x | + | 550 | × | 99 | × | 3 25 |
| 7600 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | + | 10000 | = | 550 | x | + | 6534 |
| 87600 | = | 550 | x | + | 6534 |
| - | 550 | x | = | 6534 | − | 87600 |
| - | 550 | x | = | - | 81066 |
| 81066 | = | 550 | x |
| 550 | x | = | 81066 |
| x | = | 81066 | ÷ | 550 |
| = | 81066 | × | 1 550 |
| = | 40533 | × | 1 275 |
| x | = | 40533 275 |
| x | = | 147.392727 |