| ( | 3071 | + | 500 | ) | ÷ | ( | 1 | + | x | ÷ | 100 | − | 111 100 | ) | = | 3418 |
| 方程两边同时乘以: | ( | 1 | + | x | ÷ | 100 | − | 111 100 | ) |
| ( | 3071 | + | 500 | ) | = | 3418 | ( | 1 | + | x | ÷ | 100 | − | 111 100 | ) |
| 3071 | + | 500 | = | 3418 | ( | 1 | + | x | ÷ | 100 | − | 111 100 | ) |
| 3071 | + | 500 | = | 3418 | × | 1 | + | 3418 | x | ÷ | 100 | − | 3418 | × | 111 100 |
| 3071 | + | 500 | = | 3418 | + | 1709 50 | x | − | 189699 50 |
| 3571 | = | - | 18799 50 | + | 1709 50 | x |
| - | 1709 50 | x | = | - | 18799 50 | − | 3571 |
| - | 1709 50 | x | = | - | 197349 50 |
197349 50 | = | 1709 50 | x |
1709 50 | x | = | 197349 50 |
| x | = | 197349 50 | ÷ | 1709 50 |
| = | 197349 50 | × | 50 1709 |
| = | 197349 | × | 1 1709 |
| x | = | 197349 1709 |
| x | = | 115.476302 |