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What will be the solution of (\frac{x-1}{2}\leq5)?

Answer and explanation

Correct answer: (x\leq11)

The answer is option A, x≤11. The inequality says that half of x−1 is at most 5. Since the denominator 2 is positive, multiplying both sides by 2 does not change the inequality sign: x−1≤10. Adding 1 to both sides gives x≤11. This includes 11 and every smaller number. Option A is correct because it states exactly this solution set. Option B, x≥11, reverses the direction without any valid reason; the sign changes only when multiplying or dividing by a negative number. Option C, x≤9, comes from an arithmetic mistake, because adding 1 to 10 gives 11, not 9. Option D, x≥9, has both the wrong boundary and the wrong direction. A quick check confirms the result: x=11 gives (11−1)/2=5, which satisfies the “less than or equal to” sign, while x=12 gives 5.5 and does not satisfy it. Remember: multiplying by a positive number keeps the inequality sign unchanged.

Related tags

Linear-InequalitiesFractionAlgebraic-Solution

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