Question

It's from the chapter : "exponents and powers"
i need the workings too
please help​

Answer 1

505/19

Explanation:

Easy

so [3^3-(1/2)^(-3)*(1/19)]

simplify

3^3-8/19

3^3=27

27-8/19

convert element to fraction

(27*19)/19-8/19

combine

(27*19-8)/19

505/19

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