Question

Calcule:

a) 5/3:10/3

b) 6:1/3

c) 3/5:9/7

d) 19/80:38/40

e) 2 1/7:3 4/14

f) 3/5/5/4

Answer 1

a) 5/3:10/3
inverte a fração de baixo e multiplica pela de cima
5/3×3/10
50/9=5,55

b) 6:1/3
6×3/1
18/1=18

c)3/5:9/7
3/5×7/9
21/45 simplifica dividindo o numerador e o denominador por 3
7/15 =0,46

d)19/80:38/40
19/80×40/38
760/3040 simplifica por 10
76/304 simplifica por 2
38/152 simplifica por 2
19/76 simplifica por 19
1/4= 0,25

e) 2×1/7 :3×4/14
2/7:12/14
2/7×14/12
28/84 simplifica por 7
4/12 simplifica por 4
1/3= 0,33


f)3/5:5/4
3/5×4/5
12/25 = 0,48

Answer 2

a)5/3:10/3=5/3*3/10=15/30=1/2
b)6:1/3=6*3=18
c)3/5:9/7=3/5*7/9=21/45=7/15
d)19/80:38/40=19/80*40/38=760/3040=19/76
e)21/7:4/14=21/7*14/4=294/28=147/14
f)3/5/5/4=3/5*4/5=12/25