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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a) 2/3 de 120 =
2/3 . 120/1 =
240/3 = 80