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What is the solution of the inequality 2(x + 4) > x + 13?

Answer and explanation

Correct answer: x > 5

The governing concept is solving a linear inequality while preserving its direction under positive operations. First expand the bracket: 2(x + 4) = 2x + 8, so the inequality becomes 2x + 8 > x + 13. Subtract x from both sides to obtain x + 8 > 13. Subtract 8 from both sides, giving x > 5. Therefore option A is correct. Since the operations used were adding or subtracting the same quantities, the inequality sign did not change. The equality value x = 5 is excluded because it gives 2(9) = 18, while 5 + 13 = 18, producing equality rather than the required strict greater-than relation. The remaining options either reverse the direction or include the endpoint.

Related tags

Linear InequalitiesBracket ExpansionOne VariableSolution SetAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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