Question

calcule o valor das expressões, apresentando o resultado na forma de fração irredutível

A) 0,5+1/4.1/3
B) 1/2+1/3:5/6
C)1/4.0,5+1/2
D)15:(3/4-1/4)
E)(3+1/2).4/5
F)(0,75+1/4):2/5+1/2

Answer 1

a
5/10 + 1/12 = ( 30 +5)/60 = 35/60 = 7/12 ***
b
1/2 + 1/3 * 6/5 =
1/2 + 6/15 = ( 15 +12)/30 = 27/30 = 9/10 ***
c
1/4 * 5/10 + 1/2 =
5/40 + 1/2 =
( 5 + 20)/40 = 25/40 = 5/8 ***
d
15/1 : ( 2/4) = 15/1 * 4/2 = 60/2 = 30 ***
e
( 6 + 1)/2 * 4/5 =
7/2 * 4/5 = 28/10 = 14/5 =  2 inteiros 4/5 ***
f
(75/100 + 1/4 ):  2/5 + 1/2
( 75 + 25)/100 ) : 2/5 + 1/2 =
100/100 : 2/5 + 1/2=
1/1 : 2/5 + 1/2 =
1/1 * 5/2 + 1/2 =
5/2 + 1/2 = 6/2 = 3 ***