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Home/ Questions/Q 638
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Thais Mattos
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Thais MattosExcellent
Asked: setembro 20, 20222022-09-20T16:19:52-03:00 2022-09-20T16:19:52-03:00In: Matemática

Seu joão, tendo gasto 4/7 do seu dinheiro, ficou com 1/3 da quantia original …

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Seu joão, tendo gasto 4/7 do seu dinheiro, ficou com 1/3 da quantia original mais r$ 164,00. Qua nto ele tinha antes de gastar?

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    1. Thais Mattos Excellent
      2022-09-20T16:20:26-03:00Added an answer on setembro 20, 2022 at 4:20 pm

      Seu João possuía o valor de R$ 1.722,00 antes de gastar.

      Operações básicas da matemática:

      As operações básicas da matemática são aquelas que dão o alicerce necessário para todas as demais operações. Nesse sentido, tem-se as seguintes operações:

      Adição
      Subtração
      Multiplicação
      Divisão

      De acordo com o enunciado da questão, te-se que seu João gastou 4/7 do valor que possui e por conta disso lhe sobrou 1/3 do valor original mais R$ 164,00. Nessas condições, supondo que quantia inicial que seu João tinha era de “x” reais, pode-se afirmar que:

      x – (4/7 . x) = (1/3 .x) + 164
      x – 4x/7 = x/3 + 164
      3x/7 = x/3 + 164
      3x/7 -x/3 = 164
      9x – 7x/21 = 164
      2x/21 = 164
      2x = 164 . 21
      2x = 3444
      x = 3444/2
      x = 1722

      Dessa forma, pode-se afirmar que a quantia que seu João possuía antes de iniciar os gastos era de R$ 164,00.

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