Question

1) Calcular as multiplicações:
a) ( + 5).(+3)
b)( + 4).(-5)
c)(-8).(+4)
d) (-6).(-7)​

Answer 1

Resposta:

a) +15

b) -20

c) -32

d) +42

Answer 2

Resposta :

a) ( + 5).(+3) = 15

b)( + 4).(-5)= -20

c)(-8).(+4)= -32

d) (-6).(-7)=42