1 250 | x | × | 85 | ÷ | ( | 85 | + | 17 25 | ) | = | 5 | × | 17 25 | ÷ | ( | 85 | + | 17 25 | ) |
| 方程两边同时乘以: | ( | 85 | + | 17 25 | ) | , | ( | 85 | + | 17 25 | ) |
1 250 | x | × | 85 | ( | 85 | + | 17 25 | ) | = | 5 | × | 17 25 | ( | 85 | + | 17 25 | ) |
1 250 | x | × | 85 | × | 85 | + | 1 250 | x | × | 85 | × | 17 25 | = | 5 | × | 17 25 | ( | 85 | + | 17 25 | ) |
1 250 | x | × | 85 | × | 85 | + | 1 250 | x | × | 85 | × | 17 25 | = | 5 | × | 17 25 | × | 85 | + | 5 | × | 17 25 | × | 17 25 |
289 10 | x | + | 289 1250 | x | = | 289 | + | 289 125 |
18207 625 | x | = | 36414 125 |
| x | = | 36414 125 | ÷ | 18207 625 |
| = | 36414 125 | × | 625 18207 |
| = | 2 | × | 5 |
| x | = | 10 |