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For what value of xx is the expression 1x−3\frac{1}{x-3} undefined?

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Full solution

Q. For what value of xx is the expression 1x−3\frac{1}{x-3} undefined?
  1. Set Denominator to 00: A fraction is undefined when its denominator is 00. So we set the denominator of 1(x−3)\frac{1}{(x-3)} to 00.x−3=0x - 3 = 0
  2. Solve for x: Solve for x by adding 33 to both sides of the equation.\newlinex=3x = 3

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