Question

Calcule as divisões de frações
a)¾ : 5/6=
b) 7/5 : 3/10=
c) 2/3 : 8/9=
d) 1/6 : 2/3 =
e) 2/5 : 4/3=
f) 3/6 : 9/10=
g) 8/5 : 4/2=
h) 7/8: 2/8=

Answer 1

Explicação passo a passo:

a)

¾ : 5/6=

passa sinal de divisão para vezes invertendo o segundo termo

multiplica os 2 numeradores e os 2 denominadores

3/4 * 6/5 = ( 3 * 6 )/ ( 4 * 5 ) = 18/20 >>>>>

b)

7/5 : 3/10= 7/5 * 10/3 = ( 7 * 10)/ ( 5 * 3 )= 70/15 >>>>

c)

2/3 : 8/9= 2/3 * 9/8 ´ ( 2 *9 )/ ( 3 * 8 ) = 18/24 >>>>

d)

1/6 : 2/3 = 1/6 * 3/2 = ( 1 * 3 )/ ( 6 * 2 ) = 3/12 >>>>

e)

2/5 : 4/3= 2/5 * 3/4 = ( 2 * 3 )/ ( 5 * 4 ) = 6/24 >>>>

f)

3/6 : 9/10= 3/6 * 10/9 = ( 3 * 10)/ ( 6 * 9 ) = 30/54 >>>>

g)

8/5 : 4/2= 8/5 * 2/4 = ( 8 * 2 )/ ( 5 * 4 ) = 16/20 >>>>>

h)

7/8: 2/8= 7/8 * 8/2 = ( 7 * 8 )/ ( 8 * 2 ) = 56/16 >>>>