is x < w ?

1) x - w < x

2) x + w < w

Can someone please explain the OA along with the process of solving such sums?

Thanks in advance

Ok i got it now

1) x - w < x

subtract x from both sides :

-w < 0

w > 0 but no clue about x ------> insufficient

2) x + w < w

subtract w from both sides :

x < 0 =====> no clue about w ---> insufficient

C) 1 + 2

w > 0 and x < 0 hence x < w ------> sufficient

Can some one please confirm whether my reasoning is correct.

I believe dividing or multiplying by an expression (such as w and or x) in this case is wrong, Since it is not mentioned whether x & or w is +ve/-ve and or int or a fraction

But subtraction should be ok.

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