Solve the following inequation. Write down the solution set and represent it on the real number line.

ICSE Class 10 Mathematics PYQ · 2023 Paper · Section B

5(ii)Written · 2023 · Section B · 2023 Paper

Solve the following inequation. Write down the solution set and represent it on the real number line.

-5(x - 9) ≥ 17 - 9x > x + 2, x ∈ R.

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Given, equation :

-5(x - 9) ≥ 17 - 9x > x + 2

Solving L.H.S. of the given equation :

⇒ -5(x - 9) ≥ 17 - 9x

⇒ -5x + 45 ≥ 17 - 9x

⇒ -5x + 9x ≥ 17 - 45

⇒ 4x ≥ -28

⇒ x ≥ $-\frac{28}{4}$

⇒ x ≥ -7 ............(1)

Solving L.H.S. of the given equation :

⇒ 17 - 9x > x + 2

⇒ x + 9x < 17 - 2

⇒ 10x < 15

⇒ x < $\frac{15}{10}$

⇒ x < $\frac{3}{2}$

⇒ x < 1.5 .............(2)

From equation (1) and (2), we get :

Solution set : {x : -7 ≤ x < 1.5}

Solution set on the number line :

Solve the following inequation. Write down the solution set and represent it on the real number line. ICSE 2023 Maths Solved Question Paper.
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