Question

verify that (x ÷ y)-1 =x-1 ÷y -1. by taking x = 7/11 , y= -22/21​

Answer 1

Answer:

Step-by-step explanation:

taking L.H.S.= (x/y)-1

=[(7/11)/(-22/21)]-1                        [from changing divide into multiply the digits gets interchanged]

=[(7/11)*(-21/22)]-1

=[-147/242]-1

=[(-147-242)/242]= 389/242

taking R.H.S.= x-1/y-1

=[(7/11)-1] / [(-22/21)-1]

=[(7-11)/11] / [(-22-21)/21]

=(-4/11) / (-43/21)

=(-4/11) x (-21/43)

=84/473

L.H.S $\neq$ R.H.S.

Answer 2

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