Question

Verify that ( X + Y) -1 ≠ X -1 + Y -1 by taking X = and Y = −2/ 7; 1 /3​

Answer 1

Answer:

(x+Y)-1

(-2/7 +1/3) -1

(-6+7)/21-1

1/21-1

(1-21)/21=20/21

X-1+Y-1

-2/7 - 1 + 1/3 - 1

(-2-7)/7 +(1-3)/3

-9/7-2/3

(-27-14)/21

-41/21

Hence,20/21 is not equal to -41/21

Step-by-step explanation: