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If \(x\in\mathbb{Z}\) and \(5-2x>-7\), what is the greatest solution?

Answer and explanation

Correct answer: 5

Solving the inequality, \(5-2x>-7\) gives \(-2x>-12\). Dividing both sides by \(-2\) reverses the inequality sign, so \(x<6\). Since \(x\) is an integer, the greatest integer less than 6 is 5. Exam tip: Always reverse the inequality sign when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesIntegersGreatest ValueAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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