Question

A (-2/3).(+1/5) =
B (-7/3).(-3/7) =
C (1/5).(-7/3) =
D (-2/9).5/7 =
E (-3/4).(-5/7) =
F (-2).(-1/6) =
G 5.(-4/7) =
H -2.(-1/3) =

me ajudem pf

Answer 1

a) ( - 2/3) . ( + 1/5) =
- 2/15
b) ( - 7/3) . ( - 3/7) =
+ 21/15 = 7/5 (simplificado)
c) ( 1/5) . ( - 7/3)
- 7/5
d) ( - 2/9 ) . 5/7
- 10/63
e) ( - 3/4) . ( - 5/7)
+ 15/28
f) ( - 2) . ( - 1/6)
+ 2/6 = + 1/3(simplificado)
g) 5 . ( - 4/7)
- 20/7
h) - 2 . ( - 1/3)
+ 2/3

Answer 2

A (-2/3).(+1/5) =  - 3/5                                                            
B (-7/3).(-3/7) = + 21/21 ==> 1

C (1/5).(-7/3) = - 7/15

D (-2/9).5/7 = - 10/63

E (-3/4).(-5/7) = + 15/28

F (-2).(-1/6) = + 2/16 ou  1/8

G 5.(-4/7) = - 20/7

H -2.(-1/3) ==  2/3