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Mathematics, 09.09.2020 18:01 ReaLily

1. Antônio e Marcos estavam tentando montar um grande quebra-cabeça. Antônio montou 2/5 das peças, e Marcos montou 1/3. Que fração das peças do quebra-cabeça eles montaram juntos? * 1 ponto a) 3/8 b) 11/15 c) 4/15 d) 2/15 2. Na festa de aniversário de Camila, 1/3 dos convidados eram primos, 2/7 eram tios, 1/21 eram avós e o restante eram amigos. A alternativa que contém a fração que corresponde à família de Camila (primos, tios e avós) e a fração correspondente aos convidados que são apenas amigos de Camila, respectivamente é: * 1 ponto a) 1/9 e 2/9 b) 4/31 e 27/31 c) 2/3 e 1/3 d) 19/21 e 2/21

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1. Antônio e Marcos estavam tentando montar um grande quebra-cabeça. Antônio montou 2/5 das peças, e...
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