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Class 10 Mathematics Pair of Linear Equations in Two Variables Algebraic methods: Substitution method and Elimination method.Hard

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What is the value of (x-y) from (\frac{x+2y}{3}=8) and (\frac{2x-y}{5}=3)?

Answer and explanation

Correct answer: (\frac{21}{5})

The equations become (x+2y=24) and (2x-y=15). The solution is (x=\frac{54}{5},\ y=\frac{33}{5}), so (x-y=\frac{21}{5}).

Related tags

Linear Equations Transformed Equations Expression Value Hard Class 10 Algebraic Methods: Substitution Method And Elimination Method.Algebraic Methods Substitution Method And Elimination Method Pair Of Linear Equations In Two Variables

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