For what values of the variable is each rational expression undefined2x-3/2x-1( step by step please)

[tex]\frac{2x-3}{2x-1}\\\\Rational\ expression\ unde fined\ if\ 2x-1=0\\\\2x=1\ \ \ \ /:2\\\\x=\frac{1}{2}\leftarrow answer[/tex]

'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 = 0Add 1 to each side:2x = 1Divide each side by 2 :x = 1/2 .