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Solve the inequality (6-5(x-2)\le 3(2-x)).

Answer and explanation

Correct answer: \(x\ge 5\)

On expanding the brackets, \(6-5(x-2)=16-5x\) and \(3(2-x)=6-3x\). Therefore, \(16-5x\le 6-3x\), which gives \(10\le 2x\). Since 2 is positive, dividing by 2 does not reverse the inequality sign, so \(x\ge 5\). The option \(x\le 5\) is incorrect because an inequality reverses only when multiplying or dividing by a negative number. Exam tip: after expanding brackets, move like terms carefully and check whether any operation involves a negative number.

Related tags

Linear InequalitiesOne VariableAlgebraic SolutionInequality SignsBracketsClass 11Algebraic Solution Of Linear Inequalities In One VariableMathematics

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