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Mathematics, 24.08.2020 16:01 jwbri

"Seja x é o valor que satisfaz a equação: 2(x – 3) – (x + 4) = 20. Sobre x pode-se dizer que é um número:" Alguém poderia me responder? Estou em dúvida sobre a resposta.

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"Seja x é o valor que satisfaz a equação: 2(x – 3) – (x + 4) = 20. Sobre x pode-se dizer que é um nú...
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