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Which of the following results is obtained when the inequality \(-5x<20\) is solved?

Answer and explanation

Correct answer: \(x>-4\)

In \(-5x<20\), dividing both sides by \(-5\) reverses the inequality sign because the divisor is negative. Thus, \(x>\frac{20}{-5}=-4\), so option A is correct. Option B incorrectly keeps the original sign, while options C and D use the wrong sign for \(20\div(-5)\). Exam tip: always reverse an inequality sign when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesInequality RulesAlgebraic SolutionCommon MistakesAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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