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Solve the Inequation 18 – 3 (2x – 5) > 12; X ∈ W. - Mathematics

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Sum

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

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Solution

18 – 3 (2x – 5) > 12; x ∈ W.

⇒ 18 - 6x + 15 > 12

⇒ 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}

Concept: Replacement Set and Solution Set
  Is there an error in this question or solution?

APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 15 Linear Inequations
Exercise 15 (A) | Q 9 | Page 173
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