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Hebiney
@Hebiney
December 2019
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Me ajudem a responder por favor:
(3-1/3):(1+1/5)=
(2-1/2):(2/3-4)=
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rodrigoreichert
Verified answer
(3 - 1/3) ÷ (1 + 1/5) =
(9/3 - 1/3) ÷ (5/5 + 1/5) =
(8/3) ÷ (6/5) =
(8/3) * (5/6) =
40/18 =
20/9
(2 - 1/2) ÷ (2/3 - 4) =
(4/2 - 1/2) ÷ (2/3 - 12/3) =
(3/2) ÷ (-10/3) =
(3/2) ÷ (-3/10) =
-9/20
1 votes
Thanks 1
Hebiney
muito obrigada, mas o que " * " significa?
rodrigoreichert
Esse símbolo é de multiplicação.
Hebiney
ata
rodrigoreichert
Quando há uma divisão entre duas frações, deve-se manter a primeira fração e multiplicar pelo inverso da segunda.
Hebiney
sim
rodrigoreichert
Então 8/3 dividido por 6/5 é igual a 8/3 multiplicado por 5/6.
Hebiney
ok
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Verified answer
(3 - 1/3) ÷ (1 + 1/5) =(9/3 - 1/3) ÷ (5/5 + 1/5) =
(8/3) ÷ (6/5) =
(8/3) * (5/6) =
40/18 =
20/9
(2 - 1/2) ÷ (2/3 - 4) =
(4/2 - 1/2) ÷ (2/3 - 12/3) =
(3/2) ÷ (-10/3) =
(3/2) ÷ (-3/10) =
-9/20