Укажите пары значений \(\displaystyle w\) и \(\displaystyle y{\small,}\) при которых выражение \(\displaystyle \frac{wy}{w-y}\) не имеет смысла.

• \(\displaystyle w=2{\small;}\) \(\displaystyle y=-2\)
• \(\displaystyle w=3{\small;}\) \(\displaystyle y=3\)
• \(\displaystyle w=-3{\small;}\) \(\displaystyle y=3\)
• \(\displaystyle w=2{\small;}\) \(\displaystyle y=2\)