Question

verify the property X × Y = Y× X for X = 7/9 ,Y = 2/21​ Please give your Answer Step by Step​

Answer 1

Answer:

xy=yx

(7/9)(2/21)=(2/21)(7/9)

1=1

hence verified

Answer 2

Step-by-step explanation:

We have, x x y =  − 1 3 × ( 2 7 ) −13×(27) =  − 2 21 −221 y x x =  2 7 × ( − 1 3 ) 27×(−13)  =  − 2 21 −221

 (ii) We have, x x y =  − 3 5 × ( − 11 3 ) −35×(−113) =  33 65 3365 y x x =  − 11 13 × ( − 3 5 ) −1113×(−35)  =  33 65 3365

 (iii) We have, x x y =  2 × ( 7 − 8 ) 2×(7−8) =  − 14 8 −148 =  − 7 4 −74 y x x =  7 − 8 × 2 7−8×2  =  − 14 8 = − 7 4 −148=−74  

(iv) We have, x x y =  0 × ( − 15 78 ) 0×(−1578) = 0 y x x =  − 15 8 × 0 −158×0  = 0