Question

verify that (x+y) -1 ≠ x-1 + y-1 by taking x = -5/9 and y = -4/3

please give the answer in attachment​

Answer 1

=>(x+y)-1 ≠ x-1+y-1

=>-5/9+-4/3-1 ≠ -5/9-1+-4/3-1

=>-5-12-9/9 ≠ -5-9/9+-4-3/3

=>-26/9 ≠ -14/9+-7/3

=>-26/9 ≠ -35/3. (proved)