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Questão Matemática. Tenho dúvidas na seguinte questão.
Podem me ajudar a resolver se o par ordenado de (3,-2)é solução da equação x+2y=-1 e x-2y=7???? Please, preciso resolver um lista com vária questões assim, valendo 1,0 ponto. Já procurei por esta responta em todos os sites possíveis e nenhum me deu um resposta totalmente explicativa que tirasse as minhas dúvidas por completo! Help me!! D:
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