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If \(2a-3<7\), what is the correct bound for \(a\)?

Answer and explanation

Correct answer: \(a<5\)

Adding 3 to both sides of \(2a-3<7\) gives \(2a<10\). Dividing both sides by the positive number 2 yields \(a<5\), so option A is correct. Option B incorrectly reverses the inequality; the sign reverses only when multiplying or dividing by a negative number. Exam tip: always reverse the inequality sign when dividing by a negative quantity.

Related tags

Linear InequalitiesInequality SolvingBoundsPositive DivisionSign RulesAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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