50 | x | − | 30 | x | − | 951 | − | ( | 13 20 | x | − | 1 40 | x | − | 15 | ) | = | 0 |
方程左边 = | 20 | x | − | 951 | − | ( | 13 20 | x | − | 1 40 | x | − | 15 | ) |
20 | x | − | 951 | − | ( | 13 20 | x | − | 1 40 | x | − | 15 | ) | = | 0 |
方程左边 = | 20 | x | − | 951 | − | 13 20 | x | + | 1 40 | x | + | 15 |
= | 155 8 | x | − | 936 |
155 8 | x | − | 936 | = | 0 |
155 8 | x | = | 0 | + | 936 |
155 8 | x | = | 936 |
x | = | 936 | ÷ | 155 8 |
= | 936 | × | 8 155 |
x | = | 7488 155 |
x | = | 48.309677 |