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Which is the solution set of the inequality \(2(x-5)+3\geq 3(x-4)-7\)?

Answer and explanation

Correct answer: \(x\leq 12\)

Simplifying the left side gives \(2x-10+3=2x-7\), and simplifying the right side gives \(3x-12-7=3x-19\). Thus, \(2x-7\geq 3x-19\). Subtracting \(2x\) from both sides gives \(-7\geq x-19\); adding 19 gives \(12\geq x\), or \(x\leq 12\). Therefore, option A is correct. Option B reverses the direction incorrectly. Exam tip: the inequality sign changes direction only when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesAlgebraic SimplificationInequality SolvingAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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