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Which is the solution of 2x + 5 ≤ 17?

Answer and explanation

Correct answer: x ≤ 6

The governing concept is solving a linear inequality by applying equivalent operations to both sides. Starting with 2x + 5 ≤ 17, subtract 5 from both sides: 2x ≤ 12. Then divide both sides by the positive number 2: x ≤ 6. Because division by a positive number does not reverse the inequality sign, the result remains “less than or equal to.” Therefore option A is correct. Option B incorrectly reverses the direction, while options C and D result from treating 5 as though it were not subtracted before division or from using an incorrect operation. A quick check with x = 6 gives 17, which satisfies the inclusive inequality.

Related tags

Linear InequalitiesAlgebraic SolutionOne VariableAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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