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Which interval is the solution of (2(1-3x)<4-7x)?

Answer and explanation

Correct answer: \(x<2\)

Given \(2(1-3x)<4-7x\), expanding the bracket gives \(2-6x<4-7x\). Adding \(7x\) to both sides gives \(2+x<4\), so \(x<2\). Hence, \(x<2\) is correct. \(x\leq2\) is not correct because the original inequality is strict, so \(x=2\) is excluded. Exam tip: Reverse an inequality sign only when multiplying or dividing both sides by a negative number.

Related tags

Linear InequalitiesOne Variable InequalityAlgebraic SolutionInterval NotationClass 11 MathematicsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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