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Step-by-step explanation:
Aloha !
(x-y)-¹≠x-¹ - y-¹
If x=-2/7 & y= 4/7
(-2/7-4/7)-¹
= (-6/7)-¹
= -7/6
x-¹
= (-2/7)-¹
= -7/2
y-¹
= (4/7)-¹
= 7/4
x-¹ - y-¹
= -7/2-7/4
= -14-7/4
= -21/4
Therefore they are not equal
Thank you
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