Simplify {81/16}^-3/4×[{25/4}-3/2÷{5/2}^-3]
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[(3/2)^4]^(-3/4) × [ ((5/2)^2)^(-3/2)] ÷ (8/125) ]
= [ (3/2)^-3 × (5/2)^-3 × (125/8) ]
= (8/27) × (8/125) × ( 125/8)
= 8/27
= [ (3/2)^-3 × (5/2)^-3 × (125/8) ]
= (8/27) × (8/125) × ( 125/8)
= 8/27
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