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in Class VIII Maths by (-4,939 points)

Solve the inequality 18 – 3 (2x – 5) > 12; x W.

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18 – 3 (2x – 5) > 12; x ∈ W

⇒ 18 – 6x + 15

⇒ 33 – 12 > 6x

⇒ 21 > 6x

⇒ 6x < 21 ⇒ x < (21/6) + 7/2 = 3.1/2

But x ∈ W, x = 0, 1, 2, 3

∴ Solution set = {0, 1, 2, 3}

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