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What is the solution set of the inequality \(3(2x-5)-2(x+1)\geq 7\)?

Answer and explanation

Correct answer: \(x\geq 6\)

Expanding the brackets gives \(3(2x-5)-2(x+1)=6x-15-2x-2=4x-17\). Thus, \(4x-17\geq 7\), so \(4x\geq 24\) and \(x\geq 6\). Option A reverses the inequality, while options C and D incorrectly include or exclude the boundary value 6. Exam tip: When dividing an inequality by a positive number, its sign does not reverse.

Related tags

BracketsExpansionLinear InequalityInequality SolutionOne VariableAlgebraic Solution Of Linear Inequalities In One VariableLinear InequalitiesMathematics

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