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If \(u=7\) and \(v=2\), what is the value of \(u-v\)?

Answer and explanation

Correct answer: 5

Substituting the given values in \(u-v\) gives \(7-2=5\), so option B is correct. Option A results from addition, \(7+2=9\), option C results from multiplication, \(7\times2=14\), and option D is an incorrect subtraction. In an exam, carefully preserve the order of terms because \(u-v\) and \(v-u\) generally have different values.

Related tags

AlgebraSubstitutionSubtractionCommon QuestionsCommonMathematicsClass 9 Mcq

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