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If adding 7 to a number \(x\) gives a result that is not more than 20, what is the correct solution for \(x\)?

Answer and explanation

Correct answer: \(x\leq13\)

‘Not more than 20’ means less than or equal to 20, so the inequality is \(x+7\leq20\). Subtracting 7 from both sides gives \(x\leq13\). Option B reverses the inequality, while options C and D incorrectly exclude or reverse the equality case at 13. Exam tip: Translate ‘not more than’ or ‘at most’ as \(\leq\).

Related tags

Linear InequalitiesOne VariableWord ProblemsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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