Question

1- Calcule e simplifique os resultados sempre que possivel

a) 1/4 + 3/4 + 5/4 - 12/4

b) 4/5 + 2/3

c) 2/7 + 1/10 + 3/2

d) 7 + 5/6

e) 7/8 - 1/6

f) 5/6 - 1/4 + 2/3 - 12/4

g) 8+ 1/3 - 3/4

h) 5/8 * 3/4

i) 5/9 * 7/8 * 6/10

j) 5 * 1/3 * 2/7


Obs: / = Fração
Obs²: * = Multiplicação

Answer 1

a) 1/4 + 3/4 + 5/4 - 12/4  ==> -  3/4

b) 4/5 + 2/3 =  ( 12+10)/15 ==> 22/15

c) 2/7 + 1/10 + 3/2 =  ( 20+7+105)/70 ==> 132/70

d) 7 + 5/6 = ( 42+5)/6 =  47/6

e) 7/8 - 1/6 = (21-4)/24 ==> 17/24

f) 5/6 - 1/4 + 2/3 - 12/4 = ( 10-3+8-36)/12==> - 21/12

g) 8+ 1/3 - 3/4 = ( 96+4-9)/12 ==> 91/12

h) 5/8 * 3/4 = 15/32

i) 5/9 * 7/8 * 6/10 = 210/720 ==> 7/24

j) 5/1 * 1/3 * 2/7 = 10/21