| ( | 37 10 | x | ) | × | 3 2 | ÷ | 2 | + | ( | 3 5 | + | x | ) | × | 9 10 | ÷ | 2 | = | 129 25 |
| 方程左边 = | ( | 37 10 | x | ) | × | 3 4 | + | ( | 3 5 | + | x | ) | × | 9 20 |
| ( | 37 10 | x | ) | × | 3 4 | + | ( | 3 5 | + | x | ) | × | 9 20 | = | 129 25 |
| 方程左边 = | 37 10 | x | × | 3 4 | + | ( | 3 5 | + | x | ) | × | 9 20 |
| = | 111 40 | x | + | ( | 3 5 | + | x | ) | × | 9 20 |
| = | 111 40 | x | + | 3 5 | × | 9 20 | + | x | × | 9 20 |
| = | 111 40 | x | + | 27 100 | + | x | × | 9 20 |
| = | 129 40 | x | + | 27 100 |
129 40 | x | + | 27 100 | = | 129 25 |
129 40 | x | = | 129 25 | − | 27 100 |
129 40 | x | = | 489 100 |
| x | = | 489 100 | ÷ | 129 40 |
| = | 489 100 | × | 40 129 |
| = | 163 5 | × | 2 43 |
| x | = | 326 215 |
| x | = | 1.516279 |