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What is the solution of the inequality 5(x − 2) < 3x + 4?

Answer and explanation

Correct answer: x < 7

The governing concept is that equivalent algebraic operations preserve a linear inequality, except that division by a negative number would reverse its sign. First expand the bracket: 5x − 10 < 3x + 4. Subtract 3x from both sides to get 2x − 10 < 4. Add 10, giving 2x < 14. Since the divisor 2 is positive, division produces x < 7 without reversing the sign. Hence option A is correct. The strict inequality excludes 7: when x = 7, the original statement becomes 5(5) < 25, or 25 < 25, which is false. Option B reverses the direction, and options C and D incorrectly include the endpoint.

Related tags

Linear InequalitiesBracket ExpansionStrict InequalityAlgebraic ManipulationAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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