If x and y are negative rational

Question:

If $x$ and $y$ are negative rational numbers, then so is $x+y$.

Solution:

True.

For example, Let $x=-1 / 3$ and $y=-2 / 3$

Then,

$=x+y$

$=(-1 / 3)+(-2 / 3)$

$=-1 / 3-2 / 3$

$=-3 / 3$

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