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What is the solution of the inequality x/5 + 3 < 9?

Answer and explanation

Correct answer: x < 30

The governing concept is isolating the variable in a linear inequality and noting that multiplication by a positive number preserves the inequality direction. Start with x/5 + 3 < 9. Subtract 3 from both sides to get x/5 < 6. Multiply both sides by 5. Since 5 is positive, the sign remains unchanged, and x < 30 follows. Therefore option A is correct. The value x = 30 is excluded because it makes the left side 30/5 + 3 = 9, giving equality rather than a strict less-than result. Options C and D incorrectly include the boundary, while B reverses the solution direction without a valid negative operation. Any number smaller than 30 can be checked and satisfies the inequality.

Related tags

Linear InequalitiesFractionsPositive MultiplicationOne VariableAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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