Question

Efetue:
A) (-2).(-4)=?
B (-3).(+5)=?
C) (-30:(-6)=?
D)(-40):(+4)=?

Answer 1

a) +8
b) -15
c) +5
d) - 10

Answer 2

a)(-2).(-4)
+8

b)(-3).(+5)
-15

C) (-30):(-6)
+180

D)(-40):(+4)
-160