calcule o valor de:
a) 2/3 de 120 =
b) 5/6 + 1/8 - ( 2/9 + 1/5 ) =
c) [(2/5 + 1/3): ( 1/5)]: (3/4) =
a) 2/3 de 120 =
b) 5/6 + 1/8 - ( 2/9 + 1/5 ) =
c) [(2/5 + 1/3): ( 1/5)]: (3/4) =
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Resposta:Segue as respostas abaixo na explicação
Explicação passo a passo:
a)120.2/3
40.2
80
b) 5/6 + 1/8 - ( 2/9 + 1/5 ) =
20/24+3/24-(10/45+9/45)
23/24-19/45
345/360-152/360
193/360
c) [(2/5 + 1/3): ( 1/5)]: (3/4) =
[(6/15+5/15):(1/5)]:(3/4)
[11/15:1/5]:(3/4)
[11/15.5/1]:(3/4)
[55/15]:3/4
55/15.4/3
220/60:20/20
11/3