Evaluate (i){(1/3)^(-1) -(1/4)^(-1)}^-...

Evaluate
(i)`{(1/3)^(-1) -(1/4)^(-1)}^-1` (ii) `(5/8)^(-7) xx (8/5)^(-4)`

Verified by Experts

(i) `(1/3)^-1−( 1/4)^-1`
=`[3−4]^-1 =(−1)`
(ii) `( 5/8)^-7 ×(8/5)^-4`
=`(8/5)^7×(5/8)^4`
...

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