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Question
Write the following sets in the roaster from:
A = {x : x ∈ R, 2x + 11 = 15}
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Solution
Given that: A = {x : x ∈ R, 2x + 11 = 15}
∴ 2x + 11 = 15
⇒ 2x = 15 – 11
⇒ 2x = 4
⇒ x = 2
Hence, A = {2}
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