Answer :

[tex]\frac{2x-3}{2x-1}\\\\Rational\ expression\ unde fined\ if\ 2x-1=0\\\\2x=1\ \ \ \ /:2\\\\x=\frac{1}{2}\leftarrow answer[/tex]
AL2006
'Undefined' typically means division by zero ... what some people would
look at and call it "infinity".

Any fraction is undefined when its denominator is zero.

2x - 1 = 0

Add 1 to each side:

2x = 1

Divide each side by 2 :

x = 1/2 .


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