( | x | − | 531 5 | ) | × | 10 | − | 1 | − | 1 | = | 2 |
方程左边 = | ( | x | − | 531 5 | ) | × | 10 | − | 2 |
( | x | − | 531 5 | ) | × | 10 | − | 2 | = | 2 |
方程左边 = | x | × | 10 | − | 531 5 | × | 10 | − | 2 |
= | x | × | 10 | − | 1062 | − | 2 |
= | 10 | x | − | 1064 |
10 | x | − | 1064 | = | 2 |
10 | x | = | 2 | + | 1064 |
10 | x | = | 1066 |
x | = | 1066 | ÷ | 10 |
= | 1066 | × | 1 10 |
= | 533 | × | 1 5 |
x | = | 533 5 |
x | = | 106.6 |