Question

34. Efetue as multiplicações.
a) (-7).(-9).(+13) =
b) (+18)-(+2).(+3).(-2) =
c) (-4).(+2).(- 12) =
d) (+4)-(-7).(+9)-(-13)​

Answer 1

Resposta:

a) 63+13=76

b) +18-(+2).(-6)

+18-(-12)

+18+12=30

c) (-8).(-12)=96

d) (+4)+63+13=80