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

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Solving (3x+2y=19) and (5x-2y=21) by elimination gives which values of (x,y)?

Answer and explanation

Correct answer: (x=5, y=2)

Adding the equations gives (8x=40), so (x=5), then (y=2). In exams, add directly when coefficients are opposite.

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Pair-Linear-Equations Elimination Expert Algebraic Methods: Substitution Method And Elimination Method.Algebraic Methods Substitution Method And Elimination Method Pair Of Linear Equations In Two Variables Mathematics Class 10 Mcq

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