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Which ordered pair satisfies (3x+2y=19) and (x-y=3)?

Answer and explanation

Correct answer: \((5,2)\)

From \(x-y=3\), we get \(x=y+3\). Substituting this into \(3x+2y=19\) gives \(3(y+3)+2y=19\), so \(5y=10\) and \(y=2\). Hence, \(x=5\), and the ordered pair is \((5,2)\). Although \((6,3)\) satisfies \(x-y=3\), it gives \(3x+2y=24\ne19\). In an exam, verify the final pair in both equations.

Related tags

Pair Of Linear EquationsSubstitution MethodOrdered PairsAlgebraClass 10Algebraic Methods: Substitution Method And Elimination Method.Algebraic Methods Substitution Method And Elimination MethodPair Of Linear Equations In Two Variables

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