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Why is \\(x=4\\) included in the solution of the inequality \\(2x-3\leq x+1\\)?

Answer and explanation

Correct answer: Because the solution is \\(x\leq 4\\)

Solving \\(2x-3\leq x+1\\) gives \\(x\leq 4\\), so \\(x=4\\) belongs to the solution set. Substituting \\(x=4\\) gives 5 on both sides, so \\(5\leq 5\\) is true. The symbol \\(\leq\\) includes equality, which is why \\(x<4\\) is not the correct solution. Exam tip: Include the boundary value when the inequality sign is \\(\leq\\) or \\(\geq\\).

Related tags

Linear InequalitiesOne VariableEquality In InequalitiesAlgebraic SolutionAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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