Manhattan 5Lb Fraction and Decimal Q.33

GRE Quant Problem Solving
1

Page 403 Manhattan Fractions and decimals
m/p > n/p

Quantity A : m
Quantity B : n

Hello guys,
in this question my assumption was that i could cancel P on both sides
. So although the value of P is negative or positive I would still get m>n but I was wrong.
Can someone please help me get a clearer understanding on this one. TIA

2

Use the numbers 4 and 2 for m and n.
4/p >2/p
^if p is 1 than the expression is true.
if we change the 1 to (-1)
now we have
4/-1 = - 4
2/-1 = -2
-2 is > -4 so the inequality (-4>-2) is untrue.

that is why the answer is D