Question

Efetue as divisões:
A) 7/8: 4/7=
B) 18/4 : 6/5 =
C) 25/4 : 2/5=
D) 1/2 : 3/4=
E) 9/7 : 8/3=
F) 2/5 : 3/2

Answer 1

Explicação passo a passo:

regra >>>> passa sinal de divisão para vezes invertendo segundo termo

A)

7/8: 4/7= 7/8 * 7/4 = ( 7 * 7 )/ ( 8 * 4 ) = 49/32 >>>>

B)

18/4 : 6/5 = 18/4 * 5/6 = ( 18 * 5 )/ ( 4 * 6 ) = 90/24>>>>

C)

25/4 : 2/5= 25/4 * 5/2 = ( 25 * 5 )/ ( 4 * 2 ) = 125/8 >>>>>

D)

1/2 : 3/4= 1/2 * 4/3 = ( 1 * 4 )/ ( 2 * 3 ) = 4/6 >>>>

E)

9/7 : 8/3= 9/7 * 3/8 = ( 9 * 3 )/ ( 7 * 8 ) =27/56 >>>>

F)

2/5 : 3/2 = 2/5 * 2/3 = ( 2 * 2 )/ ( 5 * 3 ) = 4/15 >>>>>