Saturday, August 3, 2013

Solve for x if l 2x-3 l = l x-2 l

Given the equation of absolute
values:


l 2x-3 l = l x-2 l


We
need to find the values of x that verifies the equation.


We
have 4 cases:


case(1):


2x-3 =
x-2


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


case(2) :


-(2x-3) =
x-2


-2x +3 = x-2


==>
-3x = -5


==> x= 5/3
.............(2)


Case(2):


-(2x-3)
= -(x-2)


-2x+3 = -x
+2


==> -x =
-1


==> x=
1...............(3)


Case(4)
:


2x-3 = -(x-2)


2x-3 = -x +
2


==> 3x = 5


==>
x= 5/3.............(4)


From the above cases we conclude
that the solution is:


x= { 5/3 ,
1}

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