Thursday, May 7, 2015

solve for x if l 2x -3 l

To solve the inequality l 2x -3 l < 5, we'll apply
the rule of the absolute values:


-5 < 2x-3 <
5


Now, we'll solve the left side of the double
inequality:


-5 <
2x-3


We'll isolate 2x to the right
side:


-5+3 < 2x


-2
< 2x


We'll divide by
2:


-2/2 <
x


-1 <
x


We'll solve the right side of the
equation:


2x-3 <
5


We'll isolate to the left side,
2x:


2x < 5+3


2x
< 8


We'll divide by 2 and since is not a negative
value, the inequality remains the same:


x
< 4


So, the interval of x values for
the inequality to hold is:


(-1 ,
4)

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