( | ( | 220 | + | 260 | ) | × | 63 | − | x | ) | × | 17 20 | = | 478329 20 |
方程左边 = | ( | 220 | + | 260 | ) | × | 63 | × | 17 20 | − | x | × | 17 20 |
= | ( | 220 | + | 260 | ) | × | 1071 20 | − | x | × | 17 20 |
= | 220 | × | 1071 20 | + | 260 | × | 1071 20 | − | 17 20 | x |
= | 11781 | + | 13923 | − | 17 20 | x |
= | 25704 | − | 17 20 | x |
25704 | − | 17 20 | x | = | 478329 20 |
- | 17 20 | x | = | 478329 20 | − | 25704 |
- | 17 20 | x | = | - | 35751 20 |
35751 20 | = | 17 20 | x |
17 20 | x | = | 35751 20 |
x | = | 35751 20 | ÷ | 17 20 |
= | 35751 20 | × | 20 17 |
= | 2103 | × | 1 |
x | = | 2103 |