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What is the solution of (\frac{2x+1}{7}\ge \frac{x-5}{3})?

Answer and explanation

Correct answer: \(x\le 38\)

Since 7 and 3 are positive, multiply both sides by 21 without reversing the inequality sign: \(3(2x+1)\ge 7(x-5)\). Thus, \(6x+3\ge 7x-35\), which gives \(38\ge x\), or \(x\le 38\). The close distractor \(x<38\) is incorrect because at \(x=38\), both sides are equal, so 38 is included. Exam tip: An inequality sign changes direction only when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesOne VariableAlgebraic SolutionClass 11Inequality RulesAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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