Taking the set of natural numbers as the universal set, write dow… - Vidyadip

Question

Taking the set of natural numbers as the universal set, write down the complement of the set: {x : 2x + 5 = 9}

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Answer

Here $U = \{ x:x \in N\}$
Let A = {x : 2x + 5 = 9{ = {2}
$A' = U - A = \{ x:x \in N\} - \{ 2\}$
$= \{ x:x \in N,x \ne 2\}$

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