Question

$( {2}^{ - 1} \div {5}^{ - 1} )x( \frac{ - 5}{8} ) { }^{ - 1}$
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Answer 1

Answer :

$(2 {}^{ - 1} \div 5 {}^{ - 1} ) \times (\frac{ - 5}{8} ) {}^{ - 1} \\ \\ ( \frac{1}{2} \div \frac{1}{5} ) \times ( \frac{ - 8}{5} ) \\ \\ \frac{1}{2} \times \frac{5}{1} \times ( \frac{ - 8}{5} ) \\ \\ \frac{ - 8}{2} \\ \\ = - 4$

Hence, the answer is (-4)

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Answer 2

(1/2 ÷ 1/5 ) × (-8/5)

1/2 × 5 × -8/5 = -4