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What is the solution of the inequality 10 − x < 4?

Answer and explanation

Correct answer: x > 6

The governing concept is that multiplying or dividing an inequality by a negative number reverses its direction. Begin with 10 − x < 4. Subtract 10 from both sides to obtain −x < −6. To isolate x, divide by −1; because the divisor is negative, the sign reverses, giving x > 6. Thus option A is correct. The reversal is essential: forgetting it would produce x < 6, option B. Options C and D also mishandle the strict sign or direction. A quick check confirms the result: x = 7 gives 3 < 4, true, while x = 5 gives 5 < 4, false. Hence precisely numbers greater than 6 satisfy the inequality.

Related tags

Linear InequalitiesNegative CoefficientSign ReversalAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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