50 | x | − | 30 | x | − | 951 | − | ( | 13 20 | x | − | 1 4 | x | − | 15 | ) | = | 0 |
方程左边 = | 20 | x | − | 951 | − | ( | 13 20 | x | − | 1 4 | x | − | 15 | ) |
20 | x | − | 951 | − | ( | 13 20 | x | − | 1 4 | x | − | 15 | ) | = | 0 |
方程左边 = | 20 | x | − | 951 | − | 13 20 | x | + | 1 4 | x | + | 15 |
= | 98 5 | x | − | 936 |
98 5 | x | − | 936 | = | 0 |
98 5 | x | = | 0 | + | 936 |
98 5 | x | = | 936 |
x | = | 936 | ÷ | 98 5 |
= | 936 | × | 5 98 |
= | 468 | × | 5 49 |
x | = | 2340 49 |
x | = | 47.755102 |