Question

4. Calcule:
a) (+8).(+5)=

b) (-8).(-5)=

c) (+8).(-5)=

d) (-8).(+5)=

e) (+15):(+3)=

f) (+15):(-3)=

g) (-15):(-3)=

h) (-5):(+1)=

?????​

Answer 1

Resposta:

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