| ( | 170 | + | 3 5 | × | 588 | ) | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | ( | 170 | + | 3 5 | × | 609 | ) | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) |
| 170 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | + | 3 5 | × | 588 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | ( | 170 | + | 3 5 | × | 609 | ) | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) |
| 170 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | + | 3 5 | × | 588 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | 170 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | + | 3 5 | × | 609 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) |
| 170 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | 170 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) |
| 170 | × | 1 | − | 170 | × | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | 170 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) |
| 170 | × | 1 | − | 170 | × | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | 170 | × | 1 | − | 170 | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) |
| 170 | − | 187 2 | x | ÷ | ( | 100 | + | 11 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | 170 | − | 170 | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) |
| 方程两边同时乘以: | ( | 100 | + | 11 20 | x | ) | , | ( | 85 | + | 13 20 | x | ) |
| 170 | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) | = | 170 | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) |
| 170 | × | 100 | ( | 85 | + | 13 20 | x | ) | + | 170 | × | 11 20 | x | ( | 85 | + | 13 20 | x | ) | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | 170 | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) |
| 170 | × | 100 | ( | 85 | + | 13 20 | x | ) | + | 170 | × | 11 20 | x | ( | 85 | + | 13 20 | x | ) | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | = | 170 | × | 100 | ( | 85 | + | 13 20 | x | ) | + | 170 | × | 11 20 | x | ( | 85 | + | 13 20 | x | ) | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) |
| 17000 | ( | 85 | + | 13 20 | x | ) | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) | = | 17000 | ( | 85 | + | 13 20 | x | ) | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) |
| 17000 | × | 85 | + | 17000 | × | 13 20 | x | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | = | 17000 | ( | 85 | + | 13 20 | x | ) | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | ( | 85 | + | 13 20 | x | ) |
| 17000 | × | 85 | + | 17000 | × | 13 20 | x | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | = | 17000 | × | 85 | + | 17000 | × | 13 20 | x | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 |
| 1445000 | + | 11050 | x | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | = | 1445000 | + | 11050 | x | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) |
| 1445000 | + | 11050 | x | + | 187 2 | x | × | 85 | + | 187 2 | x | × | 13 20 | x | − | 187 2 | x | = | 1445000 | + | 11050 | x | + | 187 2 | x | ( | 85 | + | 13 20 | x | ) | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) |
| 1445000 | + | 11050 | x | + | 187 2 | x | × | 85 | + | 187 2 | x | × | 13 20 | x | − | 187 2 | x | = | 1445000 | + | 11050 | x | + | 187 2 | x | × | 85 | + | 187 2 | x | × | 13 20 | x | − | 170 | ( | 13 20 | x | − | 15 | ) |
| 1445000 | + | 11050 | x | + | 15895 2 | x | + | 2431 40 | x | x | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | = | 1445000 | + | 11050 | x | + | 15895 2 | x | + | 2431 40 | x | x | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 |
| 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 187 2 | x | ( | 85 | + | 13 20 | x | ) | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | = | 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) |
| 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 187 2 | x | × | 85 | − | 187 2 | x | × | 13 20 | = | 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 170 | ( | 13 20 | x | − | 15 | ) | ( | 100 | + | 11 20 | x | ) | + | 1827 5 | ( | 1 | − | ( | 13 20 | x | − | 15 | ) | ÷ | ( | 85 | + | 13 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) |
| 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 187 2 | x | × | 85 | − | 187 2 | x | × | 13 20 | = | 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 170 | × | 13 20 | x | ( | 100 | + | 11 20 | x | ) | + | 170 | × | 15 |
| 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 15895 2 | x | − | 2431 40 | x | x | + | 1764 5 | = | 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 221 2 | x | ( | 100 | + | 11 20 | x | ) | + | 2550 | ( | 100 | + | 11 20 | x | ) | + | 1827 5 |
| 1445000 | + | 11050 | x | + | 2431 40 | x | x | − | 2431 40 | x | x | + | 1764 5 | ( | 1 | − | 11 20 | x | ÷ | ( | 100 | + | 11 20 | x | ) | ) | ( | 100 | + | 11 20 | x | ) | = | 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 221 2 | x | ( | 100 | + | 11 20 | x | ) | + | 2550 | ( | 100 | + | 11 20 | x | ) | + | 1827 5 |
| 1445000 | + | 11050 | x | + | 2431 40 | x | x | − | 2431 40 | x | x | + | 1764 5 | × | 1 | ( | 100 | + | 11 20 | x | ) | = | 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 221 2 | x | ( | 100 | + | 11 20 | x | ) | + | 2550 | ( | 100 | + | 11 20 | x | ) | + | 1827 5 |
| 1445000 | + | 11050 | x | + | 2431 40 | x | x | − | 2431 40 | x | x | + | 1764 5 | × | 1 | ( | 100 | + | 11 20 | x | ) | = | 1445000 | + | 37995 2 | x | + | 2431 40 | x | x | − | 221 2 | x | × | 100 | − | 221 2 | x | × | 11 20 |