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Solve the inequality (-4(2x-1)<3(1-x)+5).

Answer and explanation

Correct answer: \(x > -\frac{4}{5}\)

Given \(-4(2x-1)<3(1-x)+5\), expanding the brackets gives \(-8x+4<8-3x\). Hence, \(-4<5x\), so \(x>-\frac{4}{5}\). Option B has the inequality in the wrong direction, while option C incorrectly includes equality; the original inequality is strict. Exam tip: Reverse an inequality sign only when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesOne Variable InequalitiesAlgebraic SolutionExpanding BracketsStrict InequalitiesClass 11 MathematicsAlgebraic Solution Of Linear Inequalities In One VariableMathematics

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