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Solve : x2>1+3x4;xN\dfrac{x}{2} > -1 + \dfrac{3x}{4}; x ∈ N

Linear Inequations

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Answer

x2>1+3x4\dfrac{x}{2} > -1 + \dfrac{3x}{4}

x23x4>1\dfrac{x}{2} - \dfrac{3x}{4} > -1

Since L.C.M. of denominator 2 and 4 = 4, multiply each term with 4 to get:

4×x24×3x4>4×1\dfrac{4 \times x}{2} - \dfrac{4 \times 3x}{4} > -4 \times 1

⇒ 2x - 3x > - 4

⇒ - 1x > - 4

⇒ x < 4

∵ x is a natural number.

Hence, solution set = {1, 2, 3}.

Solve : x/2 > -1 + 3x/4; x ∈ N. Linear Inequations, Concise Mathematics Solutions ICSE Class 8.

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