| Not quite. You can always check your answer by substituting it for x back in the original equation. If you did that here you'd get:
|5*10-1|<11, or
49<11, which is clearly not right.
It looks like you may have a typo in the orginal formula: is it |5x+1|<11, or is it |5x-1|<11?
In general, I find it easiest to start by converting the single inequality using absolute value signs to a dual inequality without the absolute values. For example, here the first step would be:
|5x-1| < 11
-11 < 5x-1 <11
Now you can use normal algebra rules to get to an expression like this: a < x < b, which tells you the range for x is from a to b. Now, can you determine what the range is for this problem? |