Question

75 pts para quem resolver estas Fraçoes heterogeneas A) 2/9÷3/9 B) 8/3÷ 4 c) 4/5÷8 d) 9/16÷3/4 E) 11/4÷5/2 F) 7/3÷9/2 G) 5/6÷5/4 H) 17/5÷5/3

Answer 1

a) 2/9 ÷ 3/9 = 18/27 = 6/9 = 2/3 = 0,666...

b) 8/3 ÷ 4/1 = 8/12 = 2/3 = 0,666...

c) 4/5 ÷ 8/1 = 4/40 = 1/10 = 0,1

d) 9/16 ÷ 3/4 = 36/48 = 3/4 = 0,75

e) 11/4 ÷ 5/2 = 22/20 = 11/10 = 1,1

f) 7/3 ÷ 9/2 = 14/27 = 0,518...

g) 5/6 ÷ 5/4 = 20/30 = 2/3 = 0,666...

h) 17/5 ÷ 5/3 = 51/25 = 2,04

Answer 2

A) temos que inverter a segunda fração e mudar o sinal para multiplicacão
2/9÷3/9 = 2/9*9/3 = 18/27

B) fizemos a mesma operação que a primeira. Nota bem: o denominador de 4 e 1.
8/3÷ 4 = 8/3*1/4 = 8/12

C) 4/5÷8 = 4/5*1/8= 4/40

D)9/16÷3/4= 9/16*4/3= 36/48

E) 11/4÷5/2 =11/4*2/5 = 22/20

F) 7/3÷9/2=  7/3* 2/9= 14/27

G) 5/6÷5/4 =5/6*4/5 =  20/30

H)17/5÷5/3= 17/5*3/5= 51/25