exam Maths Puzzle Numerical Ability

is this perpendicular or parallel

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exam Other Question

4+2i/2-3i (2+3i/2+3i)

I didnt know how to show fractions other than this way. Sorry...But this is supposed to be two fractions and they are multiplying each other. Thanks Find the quotient of the two fractions. Express your answer as a simplified improper fraction.

7/3 divided 20/21