Question

faça as divisões a seguir


a)2/3÷3/5=
b)4/5÷5/6=
c) (-5/6)÷(+1/2)=
d) (+2/9)÷(-4/3)=
e) (+6/7)÷(-9/7)=
f) (-4/5)÷(+8/5)=
g) 7/4÷(-2)=
h) (-6)÷(+12/5)=
i) (-5/27)÷(-10/9)=
j) (+3/8)÷(+5/8)=
​

Answer 1

Divisões de frações: Conversa a primeira fração e multiplica pelo inverso da segunda fração.

a)2/3÷3/5=

= 2/3 . 5/3

= 10/9

b)4/5÷5/6=

= 4/5 . 6/5

= 24/25

c) (-5/6)÷(+1/2)=

= -5/6 . 2/1

= -10/6

= -5/3

d) (+2/9)÷(-4/3)=

= 2/9 . 3/-4

= -6/36

= -1/6

e) (+6/7)÷(-9/7)=

= 6/7 . 7/-9

= -42/63

= -6/9

f) (-4/5)÷(+8/5)=

= -4/5 . 5/8

= -20/40

= -1/2

g) 7/4÷(-2)=

= 7/4 . 1/-2

= -7/8

h) (-6)÷(+12/5)=

= -6 . 5/12

= -30/12

= -5/2

i) (-5/27)÷(-10/9)=

= -5/27 . 9/-19

= 45/513

j) (+3/8)÷(+5/8)=

= 3/8 . 8/5

= 24/40

= 3/5