Question

a) (+1/5).(+4/3) =
b) (+4/9).(-7/5) =
c) (-3/2).(-5/7) =
d) (-1/5).(+1/4) =
e) (+2/3).(-1/3) =
f) (-5/8).(-4/3) =
g) (+4/5).(-1/3) =
h) (-3/5).(-7/4) =

alguém pode me ajudar? ​

Answer 1

Resposta:

a) (+1/5).(+4/3) =

1.4/5.3

4/15

b) (+4/9).(-7/5) =

-4/9 . 7/5

- 28/45

c) (-3/2).(-5/7) =

3/2 . 5/7

15/14

d) (-1/5).(+1/4) =

-1/5 . 1/4

-1/20

e) (+2/3).(-1/3) =

-2/3 . 1/3

-2/9

f) (-5/8).(-4/3) =

5/2 . 1/3

5/6

g) (+4/5).(-1/3) =

-4/5 . 1/3

-4/15

h) (-3/5).(-7/4) =

3/5 . 7/4

21/20

acho q é isso