Question

Explanation need properly...​

Answer 1

$\blue{\bold{\underline{\underline{\boxed{answer}}}}} \: \\ \: (x - y) ^{ - 1} = ( \frac{ - 2}{7} - \frac{4}{7} ) ^{ - 1} \\ = ( \frac{ - 6}{7} ) ^{ - 1} = \boxed{ \frac{ - 7}{6} } \\ x ^{ - 1} - y ^{ - 1} = \frac{ - 2}{7} ^{ - 1} - \frac{4}{7} ^{ - 1} \\ = \frac{7}{ - 2} - \frac{7}{4} = \boxed{ \frac{ - 21}{4} } \\ \frac{ - 7}{6} is \: not \: equal \: to \: \frac{ - 21}{4} \\ \\ i \: hope \: this \: help \: you \\ mark \: it \: as \: brainliest$

Answer 2

Step-by-step explanation:

Aloha !

$\text { This is Twilight Astro}$

(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