This is not the way it was presented on the

OG 11 - but here goes:

is (x-y)/(x+y) > 1 ---> when x is different then -y

in order to solve this equation we have to know if (x+y) is positive or negative.

since the possible outcomes are:

x-y > x+y or x-y < x+y

statement 1
x > 0

cannot determine if (x+y) is positive or negative.

insufficient

statement 2
y < 0

cannot determine if (x+y) is positive or negative.

both statements
still insufficient to determine if (x+y) is positive or negative.

the answer is (E)