Question

55.Calcule mentalmente.
a) 5.(-3-1)
b) 7.(2 - 5)
c) (-8+1)-(-3)
d) (-2-3-1).(-4)
Bondocir
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Answer 1

a) -15-5 = -20

b) 14-35 = -21

c) -7 + 3 = -4

d) -6. (-4) = + 24