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If \(x\in\mathbb{Z}\) and \(3x-4\ge 8\), what is the smallest integer solution of this inequality?

Answer and explanation

Correct answer: 4

Solving the inequality gives \(3x-4\ge 8\Rightarrow 3x\ge 12\Rightarrow x\ge 4\). Since \(x\) is an integer, the smallest possible value is 4. Option 3 is incorrect because \(3(3)-4=5\), which is less than 8. Exam tip: dividing both sides of an inequality by a positive number does not reverse the inequality sign.

Related tags

Linear InequalitiesIntegersSmallest SolutionAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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