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

Answer and explanation

Correct answer: \(x\le -\frac{21}{10}\)

The LCM of the denominators 2 and 3 is 6. Multiplying both sides of the inequality by the positive number 6 gives \(9-12x\ge 30-2x\). Hence, \(-21\ge 10x\), so \(x\le -\frac{21}{10}\). Option C is close, but the original inequality has \(\ge\), so the boundary value \(-\frac{21}{10}\) is included. Exam tip: multiplying or dividing an inequality by a positive number does not reverse its sign.

Related tags

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

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