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If ( \frac{5x-4}{6}\geq \frac{x+2}{3}+1 ), what is the solution for (x)?

Answer and explanation

Correct answer: \(x\geq \frac{14}{3}\)

Multiplying both sides by the positive number \(6\) does not reverse the inequality: \(5x-4\geq 2(x+2)+6\). Hence \(5x-4\geq 2x+10\), so \(3x\geq 14\) and \(x\geq \frac{14}{3}\). The option \(x>\frac{14}{3}\) is incorrect because \(x=\frac{14}{3}\) also satisfies the inequality. Exam tip: reverse an inequality sign only when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesOne VariableFractional InequalitiesAlgebraic SolutionClass 11Algebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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