309 500 | ÷ | 1 | = | 64 | ÷ | ( | 102 | + | x | ) |
| 方程两边同时乘以: | ( | 102 | + | x | ) |
309 500 | ÷ | 1 | × | ( | 102 | + | x | ) | = | 64 |
309 500 | ÷ | 1 | × | 102 | + | 309 500 | ÷ | 1 | × | x | = | 64 |
15759 250 | + | 309 500 | x | = | 64 |
309 500 | x | = | 64 | − | 15759 250 |
309 500 | x | = | 241 250 |
| x | = | 241 250 | ÷ | 309 500 |
| = | 241 250 | × | 500 309 |
| = | 241 | × | 2 309 |
| x | = | 482 309 |
| x | = | 1.559871 |