( | x | × | 60 | − | 150 | − | 20 | ) | × | 3 4 | ÷ | 40 | = | 0 |
方程左边 = | ( | x | × | 60 | − | 150 | − | 20 | ) | × | 3 160 |
( | x | × | 60 | − | 150 | − | 20 | ) | × | 3 160 | = | 0 |
方程左边 = | x | × | 60 | × | 3 160 | − | 150 | × | 3 160 | − | 20 | × | 3 160 |
= | x | × | 9 8 | − | 45 16 | − | 3 8 |
= | 9 8 | x | − | 51 16 |
9 8 | x | − | 51 16 | = | 0 |
9 8 | x | = | 0 | + | 51 16 |
9 8 | x | = | 51 16 |
x | = | 51 16 | ÷ | 9 8 |
= | 51 16 | × | 8 9 |
= | 17 2 | × | 1 3 |
x | = | 17 6 |
x | = | 2.833333 |