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Mathematics

Solve the inequation given below and represent its solution set on a number line:

2x+72>5x3+3,xI2x + \dfrac{7}{2} \gt \dfrac{5x}{3} + 3, x ∈ I

Linear Inequations

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Answer

Given,

2x+72>5x3+3\Rightarrow 2x + \dfrac{7}{2} \gt \dfrac{5x}{3} + 3

Multiplying by 6 on both sides we get,

6(2x+72)>6(5x3+3)\Rightarrow 6 \Big(2x + \dfrac{7}{2}\Big) \gt 6\Big(\dfrac{5x}{3}+3\Big)

⇒ 12x + 21 > 10x + 18

⇒ 12x - 10x > 18 - 21

⇒ 2x > -3

⇒ x > 32-\dfrac{3}{2}

⇒ x > -1.5

Since, x ∈ I

Hence, solution set = {-1, 0, 1, 2, 3,….}.

Solution on the number line is :

2x+7/2 ​> 5x/3 ​+ 3, x ∈ I. Linear Inequations, RSA Mathematics Solutions ICSE Class 10.

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