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Sum

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}

Concept: Sets and Their Representations

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