NCERT Ch-8 Ex-10 Pg no. 171

in second step why (1 / 3r ) is given and why not (1/3)r is given. If you say that one raise to the any no. is one so why (1/x)r is given why not same as (1/ 3r) i.e. (1/xr)

it should be same (1/x)r and (1/3)r .PLZZZzzz ANSWER SOON and plzzz give elaborated answer

Both and are equal and therefore, anyone of them can be written. There is no particular reason why one form is used and the other is not used. Both of them have the same meaning and value and can be interchanged. 

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Kindly specify the question @natty2all

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