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

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If (y=x+1) and (x+y=7), what are the values of (x) and (y)?

Answer and explanation

Correct answer: (x=3,\ y=4)

Substituting (y=x+1) in (x+y=7) gives (2x+1=7), so (x=3) and (y=4). Use the already isolated variable in exams.

Related tags

Linear Equations Substitution Isolated Variable Easy 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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