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Mathematics

Solve: 9x - 7 ≤ 28 + 4x; x ∈ W.

Linear Inequations

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Answer

9x - 7 ≤ 28 + 4x

⇒ 9x - 4x ≤ 28 + 7

⇒ 5x ≤ 35

⇒ x ≤ 355\dfrac{35}{5}

⇒ x ≤ 7

∵ As x is a whole number.

Hence, solution set = {0, 1, 2, 3, 4, 5, 6, 7}.

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