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What is the solution of the inequality x + 5 > 12?

Answer and explanation

Correct answer: x > 7

The governing concept is maintaining equivalence while isolating the variable in a linear inequality. Since 5 is added to x, subtract 5 from both sides: x + 5 − 5 > 12 − 5. This simplifies to x > 7. The operation is subtraction of the same number, so the direction of the inequality does not change. Therefore option A is correct. Option B gives the opposite direction, while option C incorrectly includes x = 7; substituting 7 into the original statement gives 12 > 12, which is false. Option D has both the wrong direction and the wrong endpoint condition. Any number greater than 7 satisfies the inequality.

Related tags

Linear InequalitiesOne VariableIsolating VariableAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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