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What is the solution of the inequality (\frac{x}{3}+4<7)?

Answer and explanation

Correct answer: \(x<9\)

Given \(\frac{x}{3}+4<7\), subtracting 4 from both sides gives \(\frac{x}{3}<3\). Multiplying both sides by the positive number 3 does not change the inequality sign, so \(x<9\). The option \(x\leq 9\) is incorrect because the original inequality is strict. Exam tip: Reverse an inequality sign only when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesOne VariableAlgebraic SolutionFractional InequalitiesClass 11 MathematicsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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