SOLUTION: How do you make a fraction undefined? and is it any diffrent if there are two variables? ex, 3xy/2x-4

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Question 445733: How do you make a fraction undefined? and is it any diffrent if there are two variables? ex, 3xy/2x-4
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
a fraction is undefined when the denominator (bottom) is equal to zero ___ can't divide by zero, right?

the number of variables is not an issue