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NCERT Class XI Mathematics - Linear Inequalities - Solutions
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Question : 55 of 65
Marks:
+1,
-0
- 15 < ≤ 0
Solution:
- 15 × 5 < × 5 ≤ 0 × 5 [Multiplying by 5] ⇒ –75 < 3(x – 2) ≤ 0 ⇒ < x - 2 ≤ [Dividing each side by 3] ⇒ –25 < x – 2 ≤ 0 or –25 + 2 < x – 2 + 2 ≤ 0 + 2 [Adding 2] ⇒ –23 < x ≤ 2 Hence, x is less than or equal to 2 and greater than –23, i.e., x ∈ (–23, 2]
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