Question

(3³)¹÷2² before 1 and 2 power there is –​ sign

Answer 1

Answer:

$( { {3}^{3} })^{ - 1} \div {2}^{ - 2} \\ = ({3 \times 3 \times 3)}^{ - 1} \div ( {2 \times 2)}^{ - 1} \\ = {27}^{ - 1} \div {4}^{ - 1} \\ = \frac{1}{27} \div \frac{1}{4} \\ = \frac{1}{27} \times \frac{4}{1} \\ = \frac{4}{27}$