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Which statement is correct for 2x + 5 ≤ 2x + 9?

Answer and explanation

Correct answer: All real numbers are solutions

To solve the inequality, subtract 2x from both sides. This gives 5≤9, which is a true numerical statement independent of x. Therefore every real value of x satisfies the original inequality. This type of result is called an identity in the context of the inequality: the variable terms cancel and the remaining statement is always true. For example, x=0 gives 5≤9, x=10 gives 25≤29, and x=−7 gives −9≤−5; all work. Hence option A is correct. Option B would be correct only if cancellation produced a false statement such as 5≤3. Options C and D incorrectly impose restrictions on x that do not arise from the simplified inequality.

Related tags

Linear InequalityIdentityAll Real SolutionsAlgebraic Solution Of Linear Inequalities In One VariableLinear InequalitiesMathematicsClass 11 Mcq

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