Question

solve this quickly please

Answer 1

if xyz=1

than x=1

y =1

z=1

than,

1 1 1

-------------- + -------------- + -------------- = 1

1+1+1/1 1+1+1/1 1+1+1/1

=1×1 1×1 1×1

--------- + ------------- + ---------- = 1

1+1+1 1+1+1 1+1+1

=1 1 1

------ + ------- + ------- = 1

3 3 3

= 3

------ =1

3

= 1=1

hence,proved