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Solve (2x+y=13) and (x+3y=19).

Answer and explanation

Correct answer: (4, 5)

From the first equation, y = 13 - 2x. Substituting this into the second equation gives x + 3(13 - 2x) = 19, so -5x = -20 and x = 4. Then y = 13 - 2(4) = 5. Hence, the solution is (4, 5). The close distractor (5, 4) gives 2x + y = 14, so it is not correct. Exam tip: Always verify the ordered pair in both original equations.

Related tags

Pair Of Linear EquationsSubstitution MethodAlgebraic MethodsClass 10 MathematicsOrdered PairsAlgebraic Methods: Substitution Method And Elimination Method.Algebraic Methods Substitution Method And Elimination MethodPair Of Linear Equations In Two V

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