Thursday, August 30, 2012

Solve the inequality 2- 5*l 2x-3 l

2- 5*l 2x-3 l <
7


First we will need to isolate the absolute values on the
left side.


Let us subtract 2 from both
sides.


==> -5*l2x-3l <
5


Now we will divide by -5 and reverse the
inequality.


==> l 2x-3 l >
-1


==> 2x-3 >
-1


==> 2x >
2


=> x >
1...............(1)


-(2x-3) >
-1


==> 2x-3 <
1


==> 2x <
4


==> x <
2...............(2)


Now we will
rewrite:


==> -1 < 2x-3 <
1


Add 3 to all
sides.


==> 2 < 2x <
4


Now we will divide by
2.


==> 1 < x <
2


Then the values of x belongs to the
interval (1, 2)

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